Publications

Books/ Book Chapters

  1. Lasers: An Introduction
    P. K. Gupta and R. Khare
    Laser Physics and Technology, Eds. P. K. Gupta and R. Khare, Springer India, pp 1-25 (2015).

  2.  Biomedical Applications of Lasers
    P. K. Gupta and H. S. Patel
    Laser Physics and Technology, Eds. P. K. Gupta and R. Khare, Springer India, pp 301-331 (2015).

  3. Light-Tissue Interactions
    P. K. Gupta, M. K. Swami and H. S. Patel
    Handbook of Photomedicine, Eds. M. R. Hamblin and Y. Huang, Taylor & Francis, Boca Raton, pp 25-34 (2013).

  4.  Biophotonics - An Introduction
    P. K. Gupta and R. Dasgupta
    Guided Wave Optics and Photonic Devices, Eds. S. K. Bhadra and A. Ghatak, CRC Press, Boca Raton, pp 507-538 (2012).

  5. Optical Tweezers and Cytometry
    R. Dasgupta and P. K. Gupta
    Advanced Optical Flow Cytometry: Methods and Disease Diagnoses, Eds. V. V. Tuchin, Wiley-VCH GmbH,Weinheim, pp 363-386 (2011).

  6. Optical micromanipulation methods for controlled rotation transportation and microinjection of biological objects
    S. K. Mohanty and P. K. Gupta
    Laser manipulation of cells and tissues, Eds. M. W. Berns and K. O. Greulich, Academic Press, San Diego, pp. 563-599 (2007).

  7. Lasers and laser tissue interaction
    P. K. Gupta, N. Ghosh and H. S. Patel
    Fundamentals & Applications of Biophotonics in Dentistry, Ed. A. Kishen and A. Asundi, Imperial College Press, London, pp. 123-148 (2007).

  8. Laser Sources
    P. K. Gupta
    Non-linear Optics and Laser spectroscopy: principles and recent applications.Eds. S. C. Abbi and S. A. Ahmed, Narosa Publishers, New Delhi, 3-67 (2001).

  9. Lasers in Medicine
    P. K. Gupta
    Medical physics for human health care, Eds. P. K. Bhatnagar, A. S. Pradhan and A. R. Reddy, Scientific Publishers, Jodhpur, pp 143-161 (1997).

In Journals

On Biomedical Applications of Lasers

  1. Effects of acute hypoxic exposure on oxygen affinity of human red blood cells A. Chowdhury, R. Dasgupta Appl Opt., 56(3), 439-445 (2017).

  2. Improved generation of periodic optical trap arrays using non iterative algorithm
    A. Dalal, A. Chowdhury, R. Dasgupta, S. K. Majumder
    Opt. Eng. 56, 094113 (2017).

  3. Noninvasive assessment of cutaneous alterations in mice exposed to whole body gamma irradiation using optical imaging techniques.
    P. Sharma ,K. Sahu , P. Kushwaha, S. Kumar, M.K. Swami, J. Kumawat , H.S. Patel, S. Kher, P.K. Sahani, G. Haridas, P.K. Gupta
    Lasers Med Sci. (2017) doi: 10.1007/s10103-017-2276-9

  4. Visible Raman excitation laser induced power and exposure dependent effects in red blood cells
    S. Ahlawat, N. Kumar, A. Uppal, P.K. Kumar Gupta
    J Biophotonics. 10(3):415-422 (2017).

  5. Macrophage conditioned medium induced cellular network formation in MCF-7 cells through enhanced tunneling nanotube formation and tunneling nanotube mediated release of viable cytoplasmic fragments
    P. Patheja and K. Sahu
    Exp Cell Res. 15;355(2):182-193 (2017).

  6. Low-level laser therapy as an adjunct to conventional therapy in the treatment of diabetic foot ulcers
    R.K. Mathur , K. Sahu, S. Saraf ,P. Patheja, F. Khan, P.K. Gupta
    Lasers Med Sci. 32(2):275-282 (2017).

  7. Wound healing activity of curcumin conjugated to hyaluronic acid: in vitro and in vivo evaluation.
    M. Sharma ,K. Sahu, S.P Singh
    Artif Cells Nanomed Biotechnol. 28:1-9 (2017).

  8. Human ex-vivo oral tissue imaging using spectral domain polarization sensitive optical coherence tomography
    P. Sharma , Y. Verma , K. Sahu ,S. Kumar, A.V. Varma , J. Kumawat, and PK Gupta .
    Lasers Med Sci. 32(1):143-150 (2017).

  9. A comparative study on the effect of Curcumin and Chlorin-p6 on the transport of the LDS cation across a negatively charged POPG bilayer: Effect of pH
    G. K. Varshney, S. R. Kintali, P. K. Gupta and K. Das
    Spectrochim. Acta A 173, 132–138 (2017).

  10. Effect of Curcumin Addition on the Adsorption and Transport of a Cationic Dye across DPPG-POPG Liposomes Probed by Second Harmonic Spectroscopy
    G. K. Varshney, S. R. Kintali, and K. Das
    Langmuir 33 8302-8310 (2017).

  11. Effect of three pluronic polymers on the transport of an organic cation across a POPG bilayer studied by Second Harmonic spectroscopy
    S.R. Kintali, G.K. Varshney and K. Das
    Chem. Phys. Lett. 684, 267-272 (2017).

  12. Effect of bilayer partitioning of Curcumin on the adsorption and transport of a cationic dye across POPG liposomes probed by Second Harmonic Spectroscopy
    G. K. Varshney, S. R. Kintali, P. K. Gupta and K. Das
    Langmuir, 32, 10415–10421 (2016).

  13. Effect of the polyelectrolyte coating on the photothermal efficiency of gold nanorods and the photothermal induced cancer cell damage.
    R. Shrivastava *and A. Dube
    IET Nanobiotechnology DOI : 10.1049/iet-nbt.2016.0132 (2016).

  14. Off-confocal Raman spectroscopy (OCRS) for subsurface measurements in layered turbid samples
    K. M.Khan, N. Ghosh and S.K. Majumder
    Journal of Optics, 18(9): 095301 (2016).

  15. Wavelength encoded polarization measurements for simultaneous spectral and polarimetric characterization in near field
    H.S.Patel, M.K.Swami, P.K. kushwaha, A. Uppal and P.K.Gupta
    J. Opt. 18 085002 (6pp) (2016)

  16. A dual-modal optical system combining depth-sensitive laser induced fluorescence (LIF) spectroscopy and optical coherence tomography (OCT) for analyzing layered biological tissue
    K.M. Khan, R. Kumar, H. Krishna, K. D. Rao and S. K. Majumder
    Biomedical Spectroscopy and Imaging 5, 313–324 (2016).

  17. Depth-Sensitive Raman Spectroscopy of Intact Formalin-Fixed and Paraffin-Embedded Tissue Blocks for Objective Diagnosis of Cancer- An Exploratory Study
    K. M. Khan, H. Krishna, C.V. Kulkarni and S. K. Majumder
    Journal of Analytical Oncology, 5, 153-163 (2016).

  18. Tobacco consumption induced changes in the healthy oral mucosa and its effect on differential diagnosis of oral lesions – A clinical in vivo Raman spectroscopic study
    H. Krishna, S. Muttagi, P.Ingole, P. Chaturvedi and S. K. Majumder
    Journal of Analytical Oncology, 5, 110-123 (2016).

  19. Inverse SORS for detecting a low Raman-active turbid sample placed inside a highly Raman-active diffusely scattering matrix – A feasibility study
    K.M. Khan, S.B. Dutta, H. Krishna, and S. K. Majumder
    J Biophotonics. 9(9):879-87 (2016).

  20. Spatially-offset Fluorescence Spectroscopy (SOFS) Using Ring Illumination and Point Collection for Sub-surface Measurements in Layered Tissue
    K. M. Khan, R. Kumar, H. Krishna, N. Ghosh and S.K. Majumder
    Biomed Eng Lett 6:265-270 (2016).

  21. Use of Raman optical tweezers for cell cycle analysis.
    S. Ahlawat, A. Chowdhury, A. Uppal, N. Kumar and P. K. Gupta,
    To appear in Analyst (2016)

  22. Light Based Techniques for Improving Health Care: Studies at RRCAT.
    P. K. Gupta, H. S. Patel and S. Ahlawat,
    Proceedings of the National Academy of Sciences India: A - Physical Sciences 85, 489-499 (2015).

  23. Topical antimicrobial photodynamic therapy improves angiogenesis in wounds of diabetic mice.
    K. Sahu, M. Sharma, A. Dube and P. K. Gupta,
    Lasers in Medical Science 30, 1923-1929 (2015).

  24. Photonic nanojet assisted enhancement in transmission of light through hollow pyramid shaped near field probes.
    H. S. Patel, P. K. Kushwaha, M. K. Swami and P. K. Gupta,
    Journal of Optics 74, 162-170 (2015).

  25. The use of optical trap and microbeam to investigate the mechanical and transport characteristics of tunneling nanotubes in tumor spheroids.
    P. Patheja, R. Dasgupta, A. Dube, S. Ahlawat, R. S. Verma and P. K. Gupta ,
    Journal of Biophotonics 8, 694-704 (2015).

  26.  Detection of Urea Adulteration in Milk Using Near-Infrared Raman Spectroscopy.
    K. M. Khan, H. Krishna, S. K. Majumder and P. K. Gupta,
    Food Analytical Methods 8, 93-102 (2015).

  27. Cytotoxicity of curcumin silica nanoparticle complexes conjugated with hyaluronic acid on colon cancer cells.
    S. P. Singh, M. Sharma and P. K. Gupta,
    International Journal of Biological macromolecules 74, 162-170 (2015).

  28. Modulation of inflammatory response of wounds by antimicrobial photodynamic therapy.
    K. Sahu, M. Sharma and P. K. Gupta,
    Laser Therapy 24, 201-208 (2015).

  29.  Absolute velocity measurement using three-beam spectral-domain Doppler optical coherence tomography.
    P. Sharma, Y. Verma, S. Kumar and P. K. Gupta,
    Applied Physics B 120, 539-543 (2015).

  30.  Cone-shell Raman spectroscopy (CSRS) for depth-sensitive measurements in layered tissue.
    K. M. Khan, S. K. Majumder and P. K. Gupta,
    Journal of Biophotonics 8, 889-896 (2015).

  31. Depth-sensitive Raman spectroscopy combined with optical coherence tomography for layered tissue analysis.
    K. M. Khan, H. Krishna, S. K. Majumder, K. D. Rao and P. K. Gupta,
    Journal of Biophotonics 7, 77-85 (2014).

  32. Manipulation of microparticles and red blood cells using optoelectronic tweezers.
    R. S. Verma, R. Dasgupta, N. Kumar, S. Ahlawat, A. Uppal, P. K. Gupta,
    Pramana 82, 433-437 (2014).

  33. Conversion of Purpurin 18 to Chlorin P6 in the Presence of Silica, Liposome and Polymeric Nanoparticles: A Spectroscopic Study.
    B. Jain, A. Uppal, K. Das, A. Dube and P. K. Gupta,
    Journal of Molecular Structure 1060, 24-19 (2014).

  34. Effect of Poly-L-Lysine-Chlorin P6-mediated antimicrobial photodynamic treatment on collagen restoration in bacteria-infected wounds.
    K. Sahu, M. Sharma, P. Sharma, Y. Verma, K. D. Rao, H. Bansal, A. Dube and P. K. Gupta,
    Journal of Photomedicine and Laser Surgery 32, 23-29 (2014).
  35. Versatile laser microfabrication techniques for lab-on-chip devices in general and uranium analysis in particular.
    A. Malik, S. Raja and P. K. Gupta,
    Pramana 82, 243-248 (2014).
  36. Evaluation of photodynamic efficacy of Chlorin p6 bound to amine modified silica nanoparticles in Colon and Oral cancer cell lines.
    A. Uppal, B. Jain, M. K. Swami, H. S. Patel, A. Dube, P. K. Gupta and K. Das,
    Bio Nano Science 4, 85-91 (2014).

  37. Enhancement of phototoxicity of curcumin in human oral cancer cells using silica nanoparticles as delivery vehicle.
    S. P. Singh, M. Sharma and P. K. Gupta,
    Lasers in Medical Science 29, 645-652 (2014).

  38. A comparative study on the effect of Curcumin and Chlorin-p6 on the diffusion of two organic cations across a negatively charged lipid bilayer probed by second harmonic spectroscopy.
    R. K. Saini, G. K. Varshney, A. Dubey, P. K. Gupta and K.Das ,
    Journal of Molecular Structure 1074, 22-26 (2014).

  39. Hyper-Rayleigh scattering from gold nanoparticles: Effect of size and shape.
    K. Das, A. Uppal, R. K. Saini, G. K. Varshney, P. Mondal and P. K. Gupta,
    Spectrochemica Acta: A 128, 398-402 (2014).

  40.  Effect of Intraocular Pressure and Anisotropy on the Optical Properties of the Cornea: A Study using Polarization Sensitive Optical Coherence Tomography.
    A. Richhariya, Y. Verma, K. D. Rao, C. J. Roberts, A. M. Mahmoud, V. S. Sangwan, S. Punjabi and P. K. Gupta,
    Asia-Pacific Journal of Ophthalmology 3, 348-353 (2014).

  41. Extra cellular pH influences uptake and photodynamic action of pyro-pheophorbide-a entrapped in folate receptor targeted organically modified silica nanoparticle.
    S. P. Singh, M. Sharma, H. S. Patel and P. K. Gupta,
    Photodiagnosis and Photodynamic Therapy 11, 156-164 (2014).

  42.  Single detector based absolute velocity measurement using spectral domain Doppler optical coherence tomography.
    S. Kumar, Y. Verma, P. Sharma, R. Shrimali and P. K. Gupta,
    Applied Physics B 117, 395-399 (2014).

  43. White light diffraction phase microscopy as profilometry tool.
    S. K. Debnath, Y. Verma and P. K. Gupta ,
    Optical Engineering 53, 092008 (2014).

  44. Photophysics of Curcumin excited state in toluene-polar solvent mixtures: Role of H-bonding properties of the polar solvent.
    R. K. Saini and K. Das,
    Journal of Luminescence 145, 832-837 (2014).
  45. Size-dependent patterns in depolarization maps from turbid medium and tissue.
    M. K. Swami, H. S. Patel, R. M. Somyaji, P. K. Kushwaha and P. K. Gupta,
    Applied Optics 53, 6133-39 (2014).

  46. Effect of complexing with silica nanoparticles on the phototoxicty of some photosensitisers.
    P. K. Gupta, K. Das and M. Sharma,
    Procedia Engineering 92, 9-18 (2014).

  47. Evaluation of digital infra-red thermal imaging as an adjunctive screening method for breast carcinoma: A pilot study.
    M. Rassiwala, P. Mathur, R. Mathur, K. Farid, S. Shukla, P. K. Gupta and B. Jain,
    International Journal of Surgery 12, 1439-1443 (2014).

  48. In vivo Raman spectroscopy for detection of oral neoplasia: A pilot clinical study.
    H. Krishna, S. K. Majumder, P. Chaturvedi, M. Sidramesh and P. K. Gupta ,
    Journal of Biophotonics 7, 690-702 (2014).

  49. Photophysical properties of Chlorin-p 6 bound to coated gold nanorods.
    B. Jain, A. Uppal, P. K. Gupta and K. Das,
    Journal of Molecular Structure 1032, 23-28 (2013).

  50. Photodynamic treatment of oral squamous cell carcinoma in hamster cheek pouch model using chlorin p6-histamine conjugate.
    A. Parihar, A. Dube and P. K. Gupta,
    J. Photodiagnosis and Photodynamic Therapy 10, 79-86 (2013).

  51.  Topical photodynamic treatment with poly-L-lysine chlorin p6 conjugate improves wound healing by reducing hyperinflammatory response in Pseudomonas aeruginosa infected wounds of mice.
    K. Sahu, M. Sharma, H. Bansal, A. Dube and P. K. Gupta,
    Lasers in Medical Science 28, 465-471 (2013).

  52. Conversion of 3*3 Mueller matrix to 4*4 Mueller matrix for non-depolarizing samples.
    M. K. Swami, H. S. Patel and P. K. Gupta,
    Optics Communications 286, 18-22 (2013).

  53. Backscattering Mueller matrix measurement scheme using the same polarizing-analyzing optics.
    M. K. Swami, H. S. Patel and P. K. Gupta,
    Journal of Optics 15, 035709 (2013).

  54. Effect of Curcumin on the Diffusion Kinetics of a Hemicyanine Dye, LDS-698, across a Lipid Bilayer Probed by Second Harmonic Spectroscopy.
    G. K. Varshney, R. K. Saini, P. K. Gupta and K. Das,
    Langmuir 29, 2912-2918 (2013).
  55. Spectral Mueller matrix measurements for characterization of depolarization from non-spherical gold nano-particles.
    M. K. Swami, H. S. Patel, A. Uppal, P. K. Kushwaha and P. K. Gupta,
    Optics Communications 308, 136-141 (2013).

  56. IPattern matching based active optical sorting of colloids/cells.
    R. S. Verma, R. Dasgupta, S. Ahlwat, N. Kumar and P. K. Gupta,
    Journal of Optics 15, 085301 (2013).

  57. Anatomical variablility of in vivo Raman spectra of normal oral cavity and its effect on oral tissue classification.
    H. Krishna, S. K. Majumder, P. Chaturvedi and P. K. Gupta,
    Biomedical spectroscopy and Imaging 2, 199-217 (2013).

  58. Raman spectroscopic investigations on optical trap induced deoxygenation of red blood cells.
    S. Ahlawat, N. Kumar, R. Dasgupta, R. S. Verma, A. Uppal and P. K. Gupta,
    Applied Physics Letters 103, 183704 (2013).

  59.  Effect of gold nano-particles on depolarization characteristics of intralipid tissue phantom.
    M. K. Swami, H. S. Patel, P. Geethu, A. Uppal, P. K. Kushwaha and P. K. Gupta ,
    Optics Letters 38, 2855-2857 (2013).

  60. Diffusion of Chlorin-p6 across phosphatidyl choline liposome bilayer probed by second harmonic generation.
    R. K. Saini, A. Dube, P. K. Gupta and K. Das,
    Journal of Physical Chemistry B 116, 4199-4205 (2012).

  61. Three dimensional optical twisters-driven helically stacked multi-layered microrotors.
    J. Xavier, R. Dasgupta, S. Ahlawat, J. Joseph and P. K. Gupta,
    Applied Physics Letters 100, 121101(2012).

  62.  Microfluidic sorting with a moving array of optical traps.
    R. Dasgupta, S. Ahlawat and P. K. Gupta,
    Applied Optics 51, 4377-4387 (2012).

  63. Microfluidic sorting with blinking optical traps.
    R. Dasgupta, R. S. Verma and P. K. Gupta,
    Optics Letters 37, 1739-1741 (2012).

  64. Spectroscopic investigations on the binding of Methylene Blue and Nile Blue to negatively charged gold nanorods.
    R. Shrivastava, B. Jain and P. K. Gupta,
    Journal of Molecular Structure 1020, 56-62 (2012).

  65.  Plasmon-molecular resonance coupling: Chlorine-p 6 adsorbed on poly-l-lysine stabilized silver nanoparticles.
    R. K. Saini, P. K. Gupta and K. Das,
    Journal of Molecular Structure 1024, 13-17 (2012).
  66. Noninvasive Imaging of Ethanol-Induced Developmental Defects in Zebrafish Embryos Using Optical Coherence Tomography.
    K. Divakar Rao, P. Upadhyaya, M. Sharma and P. K. Gupta,
    Birth Defects Research: B 95, 7-11 (2012).

  67.  Range-independent background subtraction algorithm for recovery of Raman spectra of biological tissue.
    H. Krishna, S. K. Majumder and P. K. Gupta,
    Journal of Raman Spectroscopy 43, 1884-1894 (2012).
  68. Optical sorting in holographic trap arrays by tuning inter trap separation.
    S. Ahlwat, R. Dasgupta, R. S. Verma, N. V. Kumar and P. K. Gupta,
    Journal of Optics 14, 125501-12 (2012).

  69. Optical tweezers: Light for manipulating microscopic world.
    R. Dasgupta,
    Journal of Physics: Conference Series 365, 012007 (2012).

  70.  Picosecond spectral relaxation of curcumin excited state in a binary solvent mixture of toluene and methanol.
    R. K. Saini and K. Das,
    Journal of Physical Chemistry B 116, 10357-10363 (2012).

  71. Controlled formation and manipulations of colloidal lattices by dynamically reconfigurable three dimensional interferometric optical traps.
    J. Xavier, R. Dasgupta, S. Ahlawat, J. Joseph and P. K. Gupta,
    Applied Physics Letters 101, 201101 (2012).

  72. Determination of elastic properties of resected human breast tissue samples using Optical Coherence Tomographic Elastography.
    A. Srivastava, Y. Verma, K. Divakar Rao and P. K. Gupta,
    Strain 47, 75-87 (2011).

  73. Long distance axial trapping with Laguerre-Gaussian beams.
    R. Dasgupta, R. S. Verma, S. Ahlawat, D. Chaturvedi and P. K. Gupta,
    Applied Optics 50, 1469-1476 (2011).

  74.  Binary Tissue Classification Studies on Resected Human Breast Tissues Using Optical Coherence Tomography Images.
    M. Bhattacharjee, P. C. Ashok, K. Divakar Rao, S. K. Majumder, Y. Verma and P. K. Gupta  J. Innovative,
    Opt. Health Science 4, 59-66 (2011).
  75.  Studies on erythrocytes in malaria infected blood sample with Raman optical tweezer.
    R. Dasgupta, R. S. Verma, S. Ahlawat, A. Uppal and P. K. Gupta,
    Journal of Biomedical Optics 16, 077009 (2011).
  76.  pH dependent reversible aggregation of Chitosan & glycol-Chitosan stabilized silver nanoparticles.
    R. K. Saini, P. K. Gupta and K. Das,
    Chem. Phys. Lett. 511, 326-330 (2011).

  77.  Tumor regression induced by photodynamic treatment with chlorin p(6) in hamster cheek pouch model of oral carcinogenesis: Dependence of mode of tumor cell death on the applied drug dose.
    A. Dube, S. Sharma and P. K. Gupta ,
    Oral Oncology 47, 467-471 (2011).

  78. Use of common path phase sensitive spectral domain optical coherence tomography for measurement of refractive index.
    Y. Verma, P. Nandi, K. D. Rao, M. Sharma and P. K. Gupta,
    Applied Optics 50, E7-E12 (2011).

  79. Conjugation of chlorin p6 to histamine enhances its cellular uptake and phototoxicity in oral cancer cells.
    A. Parihar, A. Dube and P. K. Gupta,
    Cancer Chemotherapy and Pharmacology 68, 359-369 (2011).

  80.  Optical orientation and rotation of trapped red blood cells with Laguerre-Gaussian mode.
    R. Dasgupta, S. Ahlawat, R. S. Verma and P. K. Gupta,
    Optics Express 19, 7680-7688 (2011).

  81.  Long-distance optical guiding of colloidal particles using holographic axilens.
    S. Ahlawat, R. S. Verma, R. Dasgupta and P. K. Gupta,
    Applied Optics 50, 1933-1940 (2011).

  82. Imaging of human breast tissue using polarization sensitive optical coherence tomography.
    Y. Verma, M. Gautam, K. D. Rao, M. K. Swami and P. K. Gupta,
    Laser Physics 21, 2143-2148 (2011).

  83.  Single mode fiber based polarization sensitive optical coherence tomography using a swept laser source.
    P. Sharma, Y. Verma, K. D. Rao and P. K. Gupta,
    Journal of Optics 13, 115301-6 (2011).

  84. Photodynamic action of Rose Bengal Silica nanoparticle complex on breast and oral cancer cell lines.
    A. Uppal, B. Jain, P. K. Gupta and K. Das,
    Photochemistry and Photobiology 87, 1146-1151 (2011).

  85. Fluorescence Spectroscopy for Non-Invasive Early Diagnosis of Oral Mucosal Malignant and Potentially Malignant Lesions.
    P. Chaturvedi, S. K. Majumder, H. Krishna, M. Sidramesh and P. K. Gupta, J. Cancer Res.
     Therap. 6, 497-502 (2010).

  86. Mueller matrix measurements on absorbing turbid medium.
    M. K. Swami, S. Manhas, H. S. Patel and P. K. Gupta,
    Applied Optics 49, 3458-3464 (2010).

  87.  Randomized, double-blind study on role of low level nitrogen laser therapy in treatment failure tubercular lymphadenopathy, sinuses and cold abscess.
    A. Bajpai, N. K. Jain, S. Avashia and P. K. Gupta,
    Indian Journal of Tuberculosis 57, 80-86 (2010).
  88. Effect of He-Ne Laser Irradiation on Hair Follicle Growth Cycle of Swiss Albino Mice.
    S. Shukla, K. Sahu, Y. Verma, K. Divakar Rao, A. Dube and P. K. Gupta,
    Skin Pharmacology and Physiology 23, 79 (2010).

  89.  Hemoglobin degradation in human erythrocytes with long-duration near-infrared laser exposure in Raman optical tweezers.
    R. Dasgupta, S. Ahlawat, R. S. Verma, A. Uppal and P. K. Gupta,
    J. Biomed. Opt. 15, 055009 (2010).
  90.  Optical trapping of spermatozoa using Laguerre-Gaussian laser modes.
    R. Dasgupta, S. Ahlawat, R. S. Verma, S. Shukla and P. K. Gupta,
    J. Biomed. Opt. 15, 065010 (2010).

  91. NIR femtosecond laser induced hyper-Rayleigh scattering and luminescence from Silver nanoprisms.
    B. Jain, A. K. Srivastava, A. Uppal, P. K. Gupta and K. Das ,
    J. Nanosc. Nanotech. 10, 5826 - 5830 (2010).
  92. Interaction of ANS and TNS with organically modified silica nanoparticles in aqueous media.
    B. Jain, A. Uppal, P. K. Gupta and K. Das,
    Adv. Sc. Letters 3, 225-230 (2010).

  93. Mueller matrix-based optimization of reflective type twisted nematic liquid crystal SLM at oblique incidences.
    R. S. Verma, M. K. Swami, S. S. Manhas and P. K. Gupta,
    Optics Communications 283, 2580-2587 (2010).

  94. Noninvasive assessment of healing of bacteria infected and uninfected wounds using optical coherence tomography.
    K. Sahu, Y. Verma, M. Sharma, K. D. Rao and P. K. Gupta,
    Skin Research and Technology 16, 428-437 (2010).
  95.  Spectroscopic Investigations on the Binding of the Photosensitizer Chlorin p6 with Amine-modified Silica Nanoparticles in Aqueous Media.
    B. Jain, A. Uppal, P. K. Gupta and K. Das,
    Photochemistry and Photobiology 85, 927-933 (2009).
  96. Real-time in vivo imaging of adult Zebrafish brain using optical coherence tomography.
    K. D. Rao, A. Alex, Y. Verma, S. Thampi and P. K. Gupta,
    Journal of Biophotonics 2, 288-291 (2009).
  97.  Chlorin p6 preferentially localizes in endoplasmic reticulum and Golgi apparatus and inhibits Ca2+ release from intracellular store.
    G. Begum, A. Dube, P. G. Joshi, P. K. Gupta and N. B. Joshi,
    Journal of Photochemistry and Photobiology B: 95, 177-184 (2009).

  98. Light Induced Toxicity of Merocyanine 540-Silica.
    K. Das, A. Uppal, B. Jain, B. Bose and P. K. Gupta.
    J. Nanosci. Nanotech. 9, 5642-5645 (2009).

  99. He - Ne laser (632.8 nm) pre-irradiation gives protection against DNA damage induced by a near-infrared trapping beam.
    K. Sahu, S. K. Mohanty and P. K. Gupta,
    J. Biophot. 2, 140-144 (2009).
  100. Atomic force microscopic study on morphological alterations induced by photodynamic action of Toluidine Blue O in Staphylococcus aureus and Escherichia coli.
    K. Sahu, H. Bansal, C. Mukharjee, M. Sharma and P. K. Gupta,
    J. Photochem. Photobio. B, 96, 9-16 (2009).
  101. Polarized diffuse reflectance measurements on cancerous and noncancerous tissues.
    S. Manhas, M. K. Swami, H. S. Patel, A. Uppal, N. Ghosh and P. K. Gupta,
    J. Biophoton. 2, 581-587 (2009).
  102. Toluidine blue-mediated photodynamic effects on staphylococcal biofilms.
    M. Sharma, L. Visai, F. Bragheri, I. Cristiani, P. K. Gupta and P. Speziale,
    Antimicrob. Agents & Chemo. 52, 299-305 (2008).

  103. Surface-plasmon-resonance enhancement: effects on optical trapping and manipulation of nano-objects.
    S. K. Mohanty, K. Divakar Rao and P. K. Gupta,
    Journal of Nanophptonics, 2, 023509 (2008).
  104. Photodynamic efficacy of chlorin p6; a pH dependent study in aqueous and lipid environment.
    B. Bose and A. Dubey,
    Photochemistry and Photobiology B 93, 32-35 (2008).

  105. Optofluidic stretching of RBCs using single optical tweezers.
    S. K. Mohanty, A. Uppal and P. K. Gupta,
    Journal of Biophotonics 1, 522-525 (2008).
  106. Influence of endodontic chemical treatment on Enterococcus faecalis adherence to collagen studied with laser scanning confocal microscopy and optical tweezers: a preliminary study.
    S. C. Peng, S. K. Mohanty, P. K. Gupta and A. Kishen ,
    Journal of Biomedical Optics, 13, 044017 (2008).

  107.  Optical trapping near a colloidal cluster formed by a weakly focused laser beam.
    S. Rani, R. Dasgupta and P. K. Gupta ,
    Journal of Physics D: Applied Physics, 41, 105107 (2008).

  108. Imaging growth dynamics of tumour spheroids using optical coherence tomography.
    M. Sharma, Y. Verma, K. D. Rao, R. Nair and P. K. Gupta,
    Biotech. Lett. 29, 273-278 (2007).
  109. Trapping and controlled rotation of low-refractive-index particles using dual line optical tweezers.
    S. K. Mohanty, R. S. Verma and P. K. Gupta,
    Appl. Phys. B. 87, 211-215 (2007).

  110. Measurement of gradient refractive index profile of crystalline lens of fisheye in vivo using optical coherence tomography.
    Y. Verma, K. D. Rao, M. K. Suresh, H. S. Patel and P. K. Gupta,
    Appl. Phy. B., 87, 607-610 (2007).

  111. Trapping of micron-sized objects at a liquid-air interface.
    R. Dasgupta, S. Ahlawat and P. K. Gupta,
    J. Optics A. 9, S189-S195 (2007).

  112. A view-based approach for the reconstruction of optical properties of turbid media.
    A. Srivastava, H. S. Patel and P. K. Gupta,
    Current Science 93, 359-365 (2007).

  113. Optical coherence tomography using a tapered single mode fiber tip.
    Y. Verma, K. D. Rao, S. K. Mohanty and P. K. Gupta,
    Laser Phys. Lett. 4, 686-689 (2007).
  114. Self-rotation of an assembly of two or more cylindrical objects in optical tweezers: A simple approach for realization of optically driven micromotors.
    S. K. Mohanty, P. K. Gupta and R. S. Verma,
    Current Science 93, 695-698 (2007).
  115.  Simultaneous determination of size and refractive index of red blood cells by light scattering measurements.
    N. Ghosh, P. Buddhiwant, A. Uppal, S. K. Majumder, H. S. Patel and P. K. Gupta,
    Applied Physics Letters   88, 084101 (2006).

  116.  Experimental observation of spin-independent transverse shift of the centre of gravity of a reflected Laguerre-Gaussian light beam.
    R. Dasgupta and P. K. Gupta ,
    Optics Communications 257, 91-96 (2006).

  117. Optical trapping and transportation of carbon nanotubes made easy by decorating with palladium.
    M. Khan, A. K. Sood, S. K. Mohanty, P. K. Gupta, G. V. Arabale, K. Vijaymohanan and C. N. R. Rao,
    Opt. Express 14, 424-429 (2006).

  118. Evaluation of chlorin p6 for photodynamic treatment of squamous cell carcinoma in hamster cheek pouch model.
    A. Dube, S. Sharma and P. K. Gupta,
    Oral Oncology 42, 76-81 (2006).
  119. Mueller matrix approach for determination of optical rotation in chiral turbid media in backscattering geometry.
    S. Manhas, M. K. Swami, P. Buddhiwant, N. Ghosh, P. K. Gupta and K. Singh,
    Opt. Express 14, 190-202 (2006).

  120.  Anomalous Behavior of Depolarization of Light in Turbid Medium.
    N. Ghosh, P. K. Gupta, A. Pradhan and S. K. Majumder,
    Phys. Lett. A 354, 236-242 (2006).

  121.  Hydrogen Bonding Properties of Coumarin 151, 500 and 35: The Effect of Substitution at the 7-Amino Position.
    K. Das, B. Jain and H. S. Patel,
    J. Phys. Chem. A 110, 1698-1704 (2006).

  122.  Non-Invasive Ophthalmic Imaging of Adult Zebrafish (Danio rerio) using Optical Coherence Tomography.
    K. Divakar Rao, Y. Verma, H. S. Patel and P. K. Gupta,
    Current Science 90, 1506-1510 (2006).
  123. Role of low level Nitrogen laser therapy in chronic drug resistant pulmonary tuberculosis.
    A. Bajpai, S. Bhargava, N. K. Jain and P. K. Gupta,
    Indian Journal of Tuberculosis 53, 135-140 (2006).

  124. Multi-class classification algorithm for optical diagnosis of oral cancer.
    S. K. Majumder, A. Gupta, S. Gupta, N. Ghosh and P. K. Gupta,
    J. Photochem. Photobiol. B 85, 109-117 (2006).
  125. Hyper-Rayleigh scattering and continuum generation of salt induced aggregates of Silver nanoparticles: The effect of cation size (Li+, Na+ and K+).
    K. Das, A. Uppal and P. K. Gupta,
    Chem. Phy. Lett. 426, 155-158 (2006).
  126.  pH Dependent binding of chlorin-p6 with phosphatidyl choline liposomes: Comparison between one and two-photon excited fluorescence.
    B. Jain, A. Dube, K. Das and P. K. Gupta,
    Chem. Phy. Lett. 426, 163-167 (2006).
  127. Interaction of Chlorin p6 with bovine serum albumin and photodynamic oxidation of protein.
    B. Bose and A. Dube,
    J. Photochem. Photobiol. B 85, 49-55 (2006).
     
  128. Polar decomposition of 3 x 3 Mueller matrix: a tool for quantitative tissue polarimetry.
    M. K. Swami, S. Manhas, P. Buddhiwant, N. Ghosh, A. Uppal and P. K. Gupta,
    Opt. Express 14, 9324-9337(2006).
     
  129.  A study of low level nitrogen laser therapy in the treatment of non-responding tubercular lymphadenopathy and sinuses.
    A. Bajpai, S. Bhargava, P. K. Gupta and N. K. Jain,
    Indian Journal of Tuberculosis 53, 229-231 (2006).
     
  130. Pharmacokinetics and phototoxicity of purpurin-18 in human colon carcinoma cells using liposome as delivery vehicles.
    S. Sharma, A. Dube, B. Bose and P. K. Gupta,
    Cancer Chemotherapy and Pharmacology 57, 500-506 (2006).
     
  131. Fluorimetric Estimation of concentration of NADH from Human Blood Samples.
    A. Uppal, N. Ghosh, A. Datta and P. K. Gupta,
    Biotechnology and Applied Biochemistry 41, 43-47 (2005).
     
  132. Depth resolved fluorescence measurement in layered turbid medium by polarized fluorescence spectroscopy.
    N. Ghosh, S. K. Majumder, H. S. Patel and P. K. Gupta,
    Optics Letters 30, 162-164 (2005).
     
  133.  Controlled induction, enhancement, and guidance of neuronal growth cones by use of line optical tweezers
    S. K. Mohanty, M. Sharma, M. Panicker and P. K. Gupta,
    Opt Lett. 30, 2596-2598 (2005).
     
  134. Support Vector Machine for Optical Diagnosis of Cancer.
    S. K. Majumder, N. Ghosh, P. K. Gupta,
    Journal of Biomedical Optics 10, 024034 (2005).
     
  135. pH dependent binding of Chlorin-p6 with Phosphatidyl-Choline liposomes.
    K. Das, B. Jain, A. Dube and P. K. Gupta,
     
  136. Experimental investigation of perturbation Monte-Carlo based derivative estimation for imaging low-scattering tissue.
    P. K. Yalavarthy, K. Karlekar, H. S. Patel, R. M. Vasu, M. Pramanik, P. C. Mathias, B. Jain and P. K. Gupta,
    Optics Express 13, 985-997 (2005).
     
  137. Rotation of transparent, non-birefringent object by transfer of spin angular momentum of light.
    R. Dasgupta and P. K. Gupta,
    Optics Letters 30, 394-396 (2005).
     
  138. Time-gated optical imaging through turbid media using stimulated Raman scattering: Studies on image contrast.
    K. Divakar Rao, H. S. Patel, B. Jain and P. K. Gupta,
    Pramana 64, 229-238 (2005).
     
  139. Dynamics of Interaction of RBC with optical tweezers.
    S. K. Mohanty, K. S. Mohanty and P. K. Gupta,
    Optics Express 13, 4745-4751 (2005).
     
  140. A Fluorescence Spectroscopic Study of Honey and Cane Sugar Syrup.
    N. Ghosh, Y. Verma, S. K. Majumder and P. K. Gupta,
    Food Science and Tech. Res. 11, 59-62 (2005).
     
  141. Relevance Vector Machine for Optical Diagnosis of Cancer.
    S. K. Majumder, N. Ghosh and P. K. Gupta,
    Lasers in Surgery and Medicine 36, 323-333 (2005).
     
  142. Optical trap with spatially varying polarization: Application in controlled orientation of birefringent microscopic particle(s).
    S. K. Mohanty, K. Divakar Rao and P. K. Gupta,
    Applied Physics B 80, 631-634 (2005).
     
  143.  Virulence of Pseudomonas aeruginosa cells surviving Photodynamic treatment with toluidine blue.
    M. Sharma, H. Bansal and P. K. Gupta,
    Current Microbiology 50, 277-280 (2005).
     
  144.  Photophysics of Coumarin 500 and Coumarin 151 in AOT reverse micelles.
    K. Das, B. Jain and P. K. Gupta,
    Chemical Physics Letters 410, 160-164, (2005).
     
  145. Transport of microscopic objects using asymmetric transverse optical gradient force.
    S. K. Mohanty and P. K. Gupta,
    Appl. Phys. B 81, 159 - 162 (2005).
     
  146. Three-dimensional orientation of microscopic objects using combined elliptical and point optical tweezers.
    S. K. Mohanty, R. Dasgupta and P. K. Gupta,
    Appl. Phys. B 81, 1063 - 1066 (2005).
     
  147. A Spectroscopic study of photobleaching of Chlorin p6 in different environments.
    K. Das, A. Dube and P. K. Gupta,
    Dyes & Pigments 64, 201-205 (2005).
     
  148. Extra cellular pH influences mode of cell death in chlorine p6-PDT in colon adeno-carcinoma cell line.
    M. Sharma, K. Sahu, A. Dube and P. K. Gupta,
    Journal of Photochemistry and Photobiology B 81, 107-113 (2005).
     
  149.  N2 Laser Excited Autofluorescence Spectroscopy of Formalin-Fixed Human Breast Tissues.
    S. K. Majumder, N. Ghosh and P. K. Gupta,
    Journal of Photochemistry and Photobiology B 81, 33-42 (2005).
     
  150.  Nile blue in triton x-100/benzene/hexane reverse micelles: a fluorescence spectroscopic study.
    K. Das, B. Jain and H. S. Patel,
    Spectrochimica Acta: A 60, 2059-2064 (2004).
     
  151. Effect of pH on uptake and photodynamic action of chlorin p6 on human colon and breast adenocarcinoma cell lines.
    M. Sharma, A. Dube, H. Bansal and P. K. Gupta
    Photochemical and Photobiological Sciences 3, 231-235 (2004).
     
  152.  Self-rotation of red blood cells in optical tweezers: prospects for high throughput malaria diagnosis.
    S. K. Mohanty, A. Uppal and P. K. Gupta,
    Biotechnology Letters 26, 971-974 (2004).
     
  153. Laser-assisted three-dimensional rotation of microscopic objects.
    S. K. Mohanty and P. K. Gupta,
    Review of Scientific Instruments 75, 2320-2322 (2004).
     
  154.  Optical binding between dielectric particles.
    S. K. Mohanty, J. T. Andrews and P. K. Gupta,
    Optics Express 12, 2749-2756 (2004).
     
  155. Depolarization of light in a multiply scattering medium: effect of refractive index of scatterer.
    N. Ghosh, A. Pradhan, P. K. Gupta, S. Gupta, V. Jaisawal and R.P. Singh,
    Physical Review E 70, 066607 (2004).
     
  156. Nitrogen laser irradiation (337 nm) causes temporary inactivation of clinical isolates of Mycobacterium tuberculosis.
    A. Dube, K. Jayasankar, L. Prabakaran, V. Kumar and P. K. Gupta,
    Laser in Medical Science 19, 52-56 (2004).
     
  157. Measurement of NADH concentration in normal and malignant human tissues from breast and oral cavity.
    A. Uppal and P. K. Gupta,
    Biotechnology and Applied Biochemistry 37, 45-50 (2003).
     
  158.  Irradiance Dependence of the He-Ne Laser Induced Protection against UVC Radiation in E. coli Strains.
    R. Kohli and P. K. Gupta,
    J Photochem. Photobiol. B: Biol 69, 161-167 (2003).
     
  159. Laser assisted microinjection into targeted cells.
    S. K. Mohanty, M. Sharma and P. K. Gupta,
    Biotechnology Letters 25, 895-899 (2003).
     
  160. Depolarization of light in tissue phantoms - effect of collection geometry.
    N. Ghosh, P. K. Gupta, H. S. Patel, B. Jain and B. N. Singh,
    Optics Communication 222, 93-100 (2003).
     
  161. Depolarization of light in tissue phantoms - effect of a distribution in the size of scatterers.
    N. Ghosh, H. S. Patel and P. K. Gupta,
    Optics Express 11, 2198 (2003).
     
  162.  Nonlinear pattern recognition for laser induced fluorescence diagnosis of cancer.
    S. K. Majumder, N. Ghosh, S. Kataria and P. K. Gupta,
    Lasers Surg. Med. 33, 48-56 (2003).
     
  163. Modulation of macrophage structure and function by low level He - Ne laser irradiation.
    A. Dube, H. Bansal and P. K. Gupta,
    Photochemical and Photobiological Sciences 2, 851-855 (2003).
     
  164.  Induction of phr gene expression in E. coli strain KY706/pPL-1 by UVA (365 nm) irradiation.
    A. Uppal, R. Kohli, P. K. Gupta and P. S. Dubey,
    Annals of Microbiology. 53, 329-336 (2003).
     
  165. Controlled rotation of biological microscopic objects using optical line tweezer.
    R. Dasgupta, S. K. Mohanty and P. K. Gupta,
    Biotechnology Letters 25, 1625-1628 (2003).
     
  166. Photodynamic action of merocyanin 540 on carcinoma of cervix cells.
    M. Sharma, H. Bansal and P. K. Gupta,
    Indian J Expt. Biology 40, 252-257, (2002).
     
  167. Fluorescence depolarization in a scattering medium: Effect of size parameter of scatterer.
    N. Ghosh, S. K. Majumder and P. K. Gupta ,
    Physical Review E 65, 266081, (2002).
     
  168. COMET assay measurement of DNA damage in cells by laser microbeams and trapping beams with wavelengths spanning a range of 308 nm to 1064 nm.
    S. K. Mohanty, A. Rapp, S. Monajembashi, P. K. Gupta and K. O. Greulich,
    Radiation Research 157, 378-385, (2002).
     
  169.  The effect of pH and surfactant on the aggregation behaviour of Chlorin p6: a fluorescence spectroscopic study.
    A. Datta, A. Dube, B. Jain, A. Tiwari and P. K. Gupta ,
    Photochemistry and Photobiology 75, 488-494 (2002).
     
  170. In vivo Pharmacokinetics of d-ALA induced PpIX during pre and post PDT in DMBA treated Skin Carcinogenesis in Swiss mice: A comparison by three-compartment model.
    P. Diagaradjane, S. Madhuri, P. Aruna, P. K. Gupta and S. Ganesan,
    Photochemistry and Photobiology 76, 81-90, (2002).
     
  171.  Diffuse Reflectance Studies of Edible Fats.
    N. Ghosh, A. Datta and P. K. Gupta,
    Applied Spectroscopy 56, 1094 - 1097, (2002).
     
  172. Photodynamic inactivation of antibiotic resistant strain of Pseudomonas Aeruginosa by porphyrins induced by d- aminolaevulinic acid.
    M. Sharma, H. Bansal and P. K. Gupta ,
    Ind. J. Med. Res. 116, 99-105 (2002).
     
  173. Polarized fluorescence spectroscopy of human tissues.
    N. Ghosh, S. K. Majumder and P. K. Gupta,
    Optics Letters 27, 2007-2009 (2002).
     
  174. Spatial variation of fluorescence in human breast tissues.
    M. S. Nair, N. Ghosh, N. S. Raju and A. Pradhan,
    Applied Optics 41, 4024-4035 (2002)
    .
  175.  Laser induced fluorescence spectroscopy of human tissue for cancer diagnosis.
    S. K. Majumder and P. K. Gupta,
    Physics Teacher 43, E17-E21 (2001).
     
  176. Measurement of optical transport properties of normal and malignant human breast tissues.
    N. Ghosh, S. K. Mohanty, S. K. Majumder and P. K. Gupta,
    Appl. Optics. 40, 176-184 (2001).
     
  177. Depolarization of autofluorescence from malignant and normal human tissues.
    S. K. Mohanty, N. Ghosh, S. K. Majumder and P. K. Gupta
    Applied Optics 40, 1147-1154 (2001).
     
  178. He-Ne laser irradiation protects B-lymphoblasts from UVA-induced DNA damage.
    A. Dube, C- Block, E. Bauer, R. Kohli, P. K. Gupta and K. O. Greulich,
    Radiation and Environmental Biophysics 40, 77-82 (2001).
     
  179. Induction of phr gene expression in E. coli strain KY706/pPL-1 by He-Ne laser (632.8 nm) irradiation.
    R. Kohli, B. Bose and P. K. Gupta,
    J Photochem. Photobiol. B: Biol. 60, 136-142 (2001).
     
  180. A Novel Scanning Technique for Optical Coherence Tomography.
    J. T. Andrews, H. S. Patel and P. K. Gupta,
    J. Optics 30, 151-157 (2001).
     
  181. Synchronous luminescence spectroscopy for cancer diagnosis.
    S. K. Majumder and P. K. Gupta,
    Lasers in the Life Sciences 9,143-152 (2000).
     
  182. Estimation of light transport parameters in biological tissues using coherent backscattering.
    S. A. Ramakrishna and K. Divakar Rao,
    Pramana 54, 255-267 (2000).
     
  183.  N2 laser induced oxidation of hemoproteins in red blood cell lysate.
    C. Murali Krishna, B. Bose and P. K. Gupta,
    Radiation Research 153, 411-415 (2000).
     
  184. He-Ne laser pre-irradiation induces protection against UV C stress in wild type E. Coli strain K12AB1157.
    R. Kohli, P. K. Gupta and A. Dubey,
    Radiation Research 153, 181-185 (2000).
     
  185. A pilot study on the use of autofluorescence spectroscopy for diagnosis of the cancer of human oral cavity.
    S. K. Majumder, S. K. Mohanty, N. Ghosh, P. K. Gupta, D. K. Jain and F. Khan,
    Current Science 79, 1089-1094 (2000).
     
  186. Dye mediated photodynamic inactivation of bacillus subtilis cells: the involvement of singlet oxygen and superoxide radicals.
    A. Dubey, H. Bansal and P. K. Gupta,
    Indian J Biochem. Biophysics, 37, 245-250 (2000).
     
  187. Autofluroescence spectroscopy of tissues from human oral cavity for discriminating cancerous from normal oral tissue.
    S. K. Majumder, P. K. Gupta and A. Uppal,
    Lasers in Life Sciences 8, 211-227 (1999)

  188. UV excited autofluorescence spectroscopy of human breast tissue for discriminating cancerous tissue from benign tumor and normal tissue.
    S. K. Majumder, P. K. Gupta, B. Jain and A. Uppal,
    Lasers in Life Sciences 8, 249-264 (1999).
     
  189. Identification by microscopically controlled comet assay of peritoneal macrophages in a mixture of peritoneal excited for DNA strand break analysis.
    C. Bock, A. Dubey, K. O. Greulich and P. K. Gupta,
    Mutation Research 439,171-181 (1999).
     
  190. Tissue optics.
    P. K. Gupta,
    Current Science 76, 1341-1347 (1999).
     
  191. Laser Applications in Medicine: Studies at Centre for Advanced Technology.
    P. K. Gupta and D. D. Bhawalkar,
    Current Science 77, 925-933 (1999).
     
  192. Time resolved and steady state autofluorescence spectroscopy of normal and malignant human breast tissue.
    B. Jain, S. K. Majumder and P. K. Gupta,
    Lasers in Life Sciences 8, 163-173 (1998).
     
  193. Fluorescence study of maize irradiated by UVA.
    S. Singh, A. Dubey and P. K. Gupta,
    Pure Appl. Optics 7, L1-L4, (1998).
     
  194. Laser applications in medical diagnosis and photobioactivation.
    P. K. Gupta,
    Laser News 9, 12-17 (1998).
     
  195. Redox absorbance changes of the respiratory chain components of E-coli following He-Ne laser irradiation.
    A. Dubey, P. K. Gupta and S. Bharti,
    Lasers in Life Sciences 7, 173-180 (1997).
     
  196. Effect of N2 laser on the histology of the skin of Indian Albino rabbits.
    S. Agnihotri, S. Sachdeo, A. Sharma, V. Keerti and P. K. Gupta,
    Lasers in Life Sciences 7, 227-235 (1997).
     
  197. Breast cancer diagnosis using N2 laser excited autofluorescence spectroscopy.
    P. K. Gupta, S. K. Majumder and A. Uppal,
    Lasers in Surgery and Medicine 21, 417-422 (1997).
     
  198. In-vitro diagnosis of human uterine malignancy using N2 laser induced autofluorescence spectroscopy.
    S. K. Majumder, A. Uppal and P. K. Gupta,
    Current Science 70, 833-836 (1996).

On Lasers / Luminescence

  1. Characterization of laser-diode end-pumped intracavity frequency doubled, passively Q-switched and mode-locked Nd: YVO4 laser.
    P. K. Mukhopadhyay, M. B. Alsous, K. Ranganathan, S. K. Sharma, P. K. Gupta, A. Kuruvilla and T. P. S. Nathan.,
    Optics and Laset Technoogy 37, 157-162 (2005)..
     
  2. Analysis of laser-diode end-pumped intracavity frequency-doubled, passively Q-switched and mode-locked Nd: YVO4 laser.
    P. K. Mukhopadhyay, M. B. Alsous, K. Ranganathan, S. K. Sharma, P. K. Gupta, J. George and T.P.S. Nathan,
    Applied Physics B 79, 713-720 (2004).  
     
  3. Studies of defects in YVO4:Pb2+, Eu3+ red phosphor material.
    F. M. Nirwan, T. K Gundu Rao, P. K. Gupta and R. B. Pode,
    Phys. Stat. Sol. (a) 198, 447-456 (2003).
     
  4. Simultaneous Q-switching and mode-locking in an intra-cavity frequency doubled diode-pumped Nd: YVO4 / KTP green laser with Cr4+: YAG.
    P. K. Mukhopadhyay, M. B. Alsous, K. Ranganathan, S. K. Sharma, P. K. Gupta, J. George and T P S Nathan,
    Optics Communications 222, 399-404 (2003).
     
  5. Experimental determination of the thermo - optic coefficient (dn/dT) and the effective stimulated emission cross section (se) of an a - axis cut 1.3% doped Nd: GdVO4 crystal at 1.06 mm wavelength.
    P. K. Mukhopadhyay, A. Nautiyal, P. K. Gupta, K. Ranganathan, J. George, S. K. Sharma and T P S Nathan,
    Appl. Phys. B 77, 81-87 (2003).
     
  6. Operational characteristics of dual gain single cavity Nd: YVO4 laser.
    P. K. Mukhopadhyay, J. George, S. K. Sharma, P. K. Gupta and T P S Nathan,
    Pramana 58, 59-66 (2002).

  7. Nonlinear optical studies in tetraphenyl porphyrin doped boric acid glass using picosecond pulses.
    K. D. Rao, S. Anantha Ramakrishna and P. K. Gupta,
    Appl Phys. B, 72, 215-219 (2001).
     
  8. Can quartz remember and manifest its firing temperature through thermoluminiscence?
    D. K. Koul, K. S. V. Nambi, P. K. Gupta and C. L. Bhat,
    Indian J. Pure and Applied Phys. 38, 243- 247 (2000).
     
  9. Synthesis of GdVO4: Bi, Eu red phosphor by combustion process.
    B. N. Mahalley, R. B. Pode and P. K. Gupta,
    Physica Status Solidi 177, 293-302 (2000).
     
  10. Judd-Oflet intensity parameters and laser analysis of Pr3+ doped phosphate glasses sensitized by Mn2+ ions.
    G. Ajithkumar, P. K. Gupta, Gin Jose and N. V. Unnikrishnan,
    J. Non- Cryst. Solids 275, 93-106, (2000).
      
  11. Measurement of the absorption coefficient of CO2 laser windows using hysteresis in the power tuning curve of a single mode CW CO2 Laser.
    M. M. Nagarkar and P. K. Gupta,
    Appl. Optics 36, 9515- 9517 (1997).
     
  12. A method for obtaining symmetric power tuning curve for a single mode CW CO2 laser.
    M.M. Nagarkar and P. K. Gupta,
    Appl. Optics 36, 4099-4101 (1997)
     
  13. Feasibility of estimating firing temperature using the 110C TL peak of quartz.
    D.K. Koul, A.K. Singhvi, K.S.V. Nambi, C.L. Bhat and P.K. Gupta,
    Appl. Radiat. Isot., 47, 191-194 (1996).

  14. Chemical treatment of photoluminiscent porous silicon.
    R. M. Vadjikar, B. Jain, P.K. Gupta, R.V.Nandekar, D.D.Bhawalkar, M.J. Patni, R. Srinivasan and A.N. Chandorkar,
    Mat. Sci. Engg., B 23, L13 – L15 (1994).

  15. Theoretical study of the feasibility of dual band multiline operation of TEA CO2 laser using intracavity FabryPerot etalons.
    B. Jain and P.K. Gupta,
    Appl. Phys. B 54, 534-537 (1992).
     

Edited Volumes/ News Letters

  1.  Detection of Oral Cancer- The Photonics Way
    Shovan K. Majumder and Hemant Krishna
    SMC Bulletin ISSN: 2394-5087, 6(2): 47-51 (2015).

  2.  Controlled shaping of photonic nanojets using core shell microspheres.
    Kushwaha P K, Patel H S, Swami M K and Gupta P K,
    Proc. SPIE 9654, 96541H (2015).

  3. Spectroscopic Mueller matrix polarimetry of turbid medium
    Swami M K, Patel H S, Kushwaha P K, Uppal A, and Gupta P K,
    Kiran 26, 80-88 (2015).

  4.  Investigations on the Efficacy of Chlorin p6 Conjugates for photodynamic Treatment of Cancer and Bacterial Infection
    Dube A, Sahu K, Sharma M and Gupta P K,
    Kiran 25, 31-38 (2014).

  5. Biophotonics : studies at RRCAT
    Gupta P K, Majumder S K, Dasgupta R, and Sharma P,
    Kiran 23, 51-59 (2012).
     
  6. Optical Coherence Tomography for Tissue Diagnosis
    Rao K D,
    RRCAT Newsletter 25, 56-64 (2012).

  7. Optical trapping of thermo-responsive microgel particles by holographic optical tweezers
    Kannan M R R, Tata B V R, Dasgupta R, Ahlawat S, Gupta P K,
    AIP Conference Proceedings 1391, 359- 362 (2011)..

  8. A comparative evaluation of Raman and fluorescence spectroscopy for optical diagnosis of oral neoplasia
    Majumder S K, Krishna H, Sidramesh M, Chaturvedi P and Gupta P K,
    Proc. SPIE 8173, 817306 (2011).
     
  9. Raman spectroscopy for biomedical diagnosis
    Gupta P K, Majumder S K and Dasgupta R,
    AIP Conference Proceedings 1267, 135-136 (2010).  

  10. In-vivo imaging of adult zebrafish using optical coherence tomography
    Verma Y, Rao K D, Gupta P K,
    Proc. SPIE 7139, 71390H (2008).
     
  11. Optical trapping near a charged surface: Three-dimensional optical binding of colloids
    Ahlawat S, Dasgupta R, Gupta P K,
    Proc. SPIE 6535, 65350W (2007).  

  12. Tapered single mode fiber tip for high lateral resolution imaging in Optical Coherence Tomography
    Verma Y, Rao K D, Mohanty S K, Gupta P K,
    Proc. SPIE 6436, 64360Y (2007).
     
  13. Laser scanning confocal microscopy and laser tweezers based experiments to understand dentine-bacteria interactions
    Sum C, Mohanty S, Gupta P K, Kishen A,
    Proc. SPIE 6425, 642504 (2007).
     
  14. Autofluorescence spectroscopy for early diagnosis of cancer eye
    Majumder S K, Ghosh N, Rathod S M, Gupta P K,
    Proc of SPIE 6430, 64301K (2007).
     
  15. Aberrated optical tweezers for manipulation of microscopic objects
    Mohanty S K and Gupta P K,
    Proc. SPIE 6441, 64411O (2007).
     
  16. Quantitative tissue polarimetry using polar decomposition of 3 * 3 Mueller matrix
    Swami M K, Manhas S, Buddhiwant P, Ghosh N, Uppal A and Gupta P K,
    Proc SPIE 6535, 65350J (2007).
     
  17. Laser based instruments for the nuclear fuel cycle
    Sendhil R S and Gupta P K,
    RRCAT Newsletter 20, 25-29 (2007)..
     
  18. Muller matrix approach for determination of optical rotation in chiral turbid media in backscattering geometry
    Manhas S, Swami M K, Buddhiwant P, N. Ghosh, Gupta P. K., K. Singh  ,
    Proc. SPIE 6163, 61630W (2006).

  19. Photodynamic therapy of cancer: evaluation of Chlorin p6 as a potential photosensitizer
    M. Sharma, A. Dube, K. Das, P. K. Gupta,
    ISRAP bulletin, 18, 39-41 (2006)..
     
  20. Monitoring of UVA induced apoptosis in MCF-7 cells by light scattering measurements
    Ghosh N, Uppal A, Majumder S K, Gupta P K,
    Proc. SPIE 6163, 616314 (2006).
     
  21. Optical coherence tomography
    Rao K D, Verma Y, and Gupta P K,
    Kiran 17, 69 -74 (2006).
     
  22. RBCs under optical tweezers as cellular motors and rockers: Microfluidic applications
    Mohanty S K and Gupta P K,
    Proc. SPIE 6326, 63262E (2006)
     
  23. Mueller matrix approach for determination of optical rotation in chiral turbid media in backscattering geometry
    S. Manhas, M. K. Swami, P. Buddhiwant, N. Ghosh, P. K. Gupta and K. Singh,
    Optics and Photonics News Dec. 2006, 41.
     
  24. Transport of Microscopic Objects Using Line Optical Tweezers: Manipulation of Neuronal Growth Cones
    S. K. Mohanty, M. Sharma, M. Panicker and P. K. Gupta,
    Optics and Photonics News Dec.2005, 19.
     
  25. Laser micromanipulation of microscopic objects
    S. K. Mohanty and P. K. Gupta,
    CAT News Letter, page 15, Jan. 2004
     
  26. Machine Learning for Optical Diagnosis of Oral Cancer
    Majumder S K, Ghosh N and Gupta P K,
    Proc. 8th World Multi-Conference on Systemics, Cybernetics and Informatics, Vol. XVI, 18-23, (2004).
     
  27. Self-rotation of red blood cells in optical tweezers: Prospects for high throughput malaria diagnosis
    S. K. Mohanty, A. Uppal and P. K. Gupta,
    Optics and Photonics News Dec. 2004, 19
     
  28. Rotating Line Optical Tweezers Enables Controlled Intracellular Rotation of Microscopic Objects
    R. Dasgupta, S. K. Mohanty and P. K. Gupta,
    Optics & Photonics News (Newsletter of Optical Society of America) end-of-year special issue, Optics in Optics and Photonics News Dec. 2003, 16.
     
  29. Nanosecond Near-Infrared Laser- Assisted Microinjection Into Targeted Cells
    S. K. Mohanty, M. Sharma and P. K. Gupta,
    Optics and Photonics News Dec. 2003, 17.
     
  30. Laser induced fluorescence spectroscopy of human tissue for cancer diagnosis
    Gupta P K,
    Nuclear India 36, 12-13 (2003).
     
  31. Depolarization of light in turbid medium - effect of collection geometry.
    N. Ghosh, P. K. Gupta, H. S. Patel, B. Jain and B. N. Singh,
    Proc. SPIE 4916, 151-156 (2002).
     
  32.  Polarization gated optical imaging - effect of size parameter of scatterer
    N. Ghosh, P. K. Gupta, H. S. Patel and B. N. Singh,
    Proc. SPIE 4916, 202-209 (2002).
     
  33. Shedding light on cancer detection
    News India, page 13, February 2001.
     
  34. Indian group develops tools for oral cancer diagnosis
    The Lancet Oncology, 2, 258, (2001).
     
  35. In-vivo pharmacokinetics of ?-ALA induced PPIX during photodynamic therapy on mice tumor model
    Parmeswaran D, Aruna P, Gupta P K, Ganesan S,
    Proc. SPIE 4433, 128-133 (2001).
     
  36. Polarized fluorescence spectroscopy of human tissues
    Ghosh N, Majumder S K, and Gupta P K,
    Proc. 14th World congress of the International Society for Laser Surgery and Medicine pp 119-124 (2001).
     
  37. Laser induced fluorescence spectroscopy for diagnosis of cancer
    Gupta P K,
    Luminescence and its applications. 1, 178-182 (2000).
     
  38. Laser induced fluorescence spectroscopy of human tissue for the diagnosis of cancer
    P. K. Gupta,
    ISRAP Bulletin, 11, 18-25, April - June 2000.
     
  39. Laser induced fluorescence spectroscopy of human tissue for the diagnosis of cancer
    P. K. Gupta,
    Laser Horizon, 4, 56-61 (2000)
     
  40. Biomedical applications of lasers
    P. K. Gupta,
    BARC Newsletter, 201, 13-26, October 2000.
     
  41. Synchronous luminescence spectroscopy of human breast tissue
    S. K. Majumder and P. K. Gupta,
    Proc. SPIE 3252, 169-178 (1998).
     
  42. Autofluorescence spectroscopy of oral mucosa
    S. K. Majumder, A. Uppal and P. K. Gupta,
    Proc. SPIE 3252, 158-168 (1998).
     
  43. Laser applications in medical diagnosis and photobioactivation
    P K Gupta,
    Laser News 9, 12-17 (1998).
     
  44. The comet assay to study cold DNA repair in B-lymphoblasts and identification of peritoneal macrophages after UV-A irradiation
    Bock C, Dittmar H, Dube A, Gupta P K and Greulich K O,,
    Proc. DGZ Heidelberg Meetings, 0949 - 5347 (1998)
     
  45. Lasers in Medicine, Laser Tissue Interactions and safety
    Gupta P K and Bhawalkar D D,
    Guidelines in Lasers in Urology, Ed. N P Gupta, AIIMS, New Delhi (1997)
     
  46. Nitrogen laser excited autofluorescence spectroscopy for discrimination of human breast malignancy
    Majumder S K, Uppal A and Gupta P K,
    Trends in Optics and Photonics Eds. D Benavon and E Sevick-Muraca, Optical Society of America, 3, 142-146 (1996).
     
  47.  He-Ne laser induced protection against UV-C stress in E-Coli strains
    Kohli R, Gupta P K, and Dubey A,
    Biological Effects of Light, Ed. F Holich and E G.Jung Walter De Gruyter and Co., Berlin pp 243-245 (1995).
     
  48.  Laser induced fluorescence spectroscopy for diagnosis of cancer
    P. K. Gupta and S. K. Majumder,
    CAT Newsletter, 8, Jan.-June 1995.
     
  49. Effects of N2 laser irradiation on the skin of the scrotal area of albino rabbits
    A Sharma, P K Gupta, S Agnihotri and S Sachdeva,
    Proc. ICRABME 94, Ed. D C Reddy, Tata McGraw Hill, New Delhi
Conference Proceedings/Symposium
  1. Effect of low Level laser Therapy on the healing of Diabetic Foot Ulcers- a randomized control trial
    RK Mathur, K Sahu K, S Saraf, P Patheja, F Khan, PK Gupta
    Proceedings of DAE-BRNS National Laser Symposium-25, KIIT Bhubaneswar, Dec 20-23, 2016.

  2. Studies on use of optical imaging and spectroscopy for the assessment of cutaneous alterations in mice exposed to whole body gamma irradiation
    K Sahu, P Sharma, MK Swami, K Sudhir, J Kumawat, P Kushwaha, HS Patel, S Kher, M Sharma, A Dube, PK Gupta
    Proceedings of DAE-BRNS National Laser Symposium-25, KIIT Bhubaneswar, Dec 20-23, 2016.

  3. Development of a liquid-crystal tunable filter based hyper-spectral imaging system and a software interface for automated acquisition and analysis of spectral images
    H. Krishna, and S.K. Majumder
    Proceedings of DAE-BRNS National Laser Symposium-25, KIIT Bhubaneswar, Dec 20-23, 2016.

  4. Imaging occlusal contact marks using optical coherence tomography ,
    P Sharma, A Motwani, S Kumar, Y Verma, A Rathod, O Shetty and P K Gupta,
    International Conference on Optics and Photonics (ICOP-2015), University of Calcutta, February 20-22, 2015.

  5. Spectrally Encoded Polarization Sensitive Near Field Optical Microscopy
    H S Patel, M K Swami, P K Kushwaha, A Uppal and P K Gupta,
    International Conference on Optics and Photonics (ICOP-2015), University of Calcutta, February 20-22, 2015. 

  6. Controlled shaping of photonic nanojets using core shell microspheres
    P K Kushwaha, H. S. Patel, M K Swami and P K Gupta,
    International Conference on Optics and Photonics (ICOP-2015) University of Calcutta, February 20-22, 2015.

  7. A Comparative Study on the Effect of Curcumin & Chlorin-p6 on the transport of the LDS cation across a negatively charged POPG bilayer: Effect of pH,
    G. K. Varshney, S. R. Kintali, P. K. Gupta and K. Das
    National Symposium on Radiation & Photochemistry (NSRP-2015), IIT Kanpur, March 9-11, 2015.

  8. Optical spectroscopy for oral cancer diagnosis,
    S K Majumder, H. Krishna, P Ingole, P Chaturvedi, D. Dharkar and P K Gupta,
    21st Conference of International Society of Laser in Surgery and Medicine (ISLSM 2015, Indore, August 19 – 22, 2015.

  9.  Investigation on the efficacy of chlorin p6 and its histamine conjugate for photodynamic treatment of oral tumors in hester model ,
    A Dube, A Parihar and P K Gupta,
    21st Conference of International Society of Laser in Surgery and Medicine, (ISLSM 2015), Indore, August 19 – 22, 2015  

  10.  Applications of optical tweezers in biomedical diagnosis
    R Dasgupta, S Ahlawat, R S Verma A Chowdhury, N. Kumar and P K Gupta,
    21st Conference of International Society of Laser in Surgery and Medicine, (ISLSM 2015) Indore, August 19 – 22, 2015.

  11. Non-invasive monitoring of wounds using optical coherence tomography
    Y Verma, K Sahu, P Sharma, M. Sharma and P K Gupta,
    21st Conference of International Society of Laser in Surgery and Medicine, (ISLSM 2015)  Indore, August 19 – 22, 2015.  

  12.  Antimicrobial photodynamic therapy for wound healing
    K Sahu, M. Sharma, A. Dube and P K Gupta,
    21st Conference of International Society of Laser in Surgery and Medicine, (ISLSM 2015)   Indore, August 19 – 22, 2015.  

  13. Effect of Polyelectrolyte Coating of Gold Nanorods on their Photothermal Efficiency, Cellular Uptake and Photothermal Induced Cytotoxicity in Oral Cancer Cells
    R Shrivastava, A Dube and P K Gupta,
    International Symposium on Photonics Applications and Nanomaterials (ISPAN-2015), Sree Chitra Tirunal Institute for Medical Sciences and Technology Thiruvananthapuram, October 28-30, 2015.

  14. Raman spectroscopy for estimation of urea in urine.
    Sandeep Kumar, S K Majumder, P K Gupta, H Patidar and C Kulkarni,
    12th International Conference on Fiber Optics and Photonics (Photonics-2014). IIT, Kharagpur, 13 - 16 December 2014.

  15.  Detection of glucose in saliva using Raman spectroscopic technique- a feasibility study
    Sandeep Kumar S. K. Majumder and P K Gupta,
    12th International Conference on Fiber Optics and Photonics (Photonics-2014), IIT, Kharagpur, 13 - 16 December 2014.   

  16.  Polarization sensitive Raman spectroscopy of an optically trapped cell
    S. Ahlawat, A. Chowdhury, N. Kumar, A. Uppal, R.S. Verma and P K Gupta,
    14th International Conference on Raman Spectroscopy, Jena, Germany, during August 10-15, 2014

  17. Effect of hyaluronic acid conjugated organically modified silica nanoparticles entrapping curcumin on cancer cells ,
    S. P Singh, M. Sharma and P K Gupta,
    International Conference on Nanotechnology in the service of health, environment and society. (NanoSciTech2014) , Punjab University, Chandigarh, February 13-15, 2014.

  18. Raman spectroscopy for estimation of urea in urine
    Sandeep Kumar, S K Majumder, P K Gupta, H. Patidar and C. Kulkarni ,
    12th International Conference on Fiber Optics and Photonics (Photonics-2014) IIT, Kharagpur, 13 - 16 December 2014.

  19. Detection of glucose in saliva using Raman spectroscopic technique- a feasibility study
    Sandeep Kumar, S. K. Majumder and P K Gupta,
    12th International Conference on Fiber Optics and Photonics (Photonics-2014) IIT, Kharagpur, 13 - 16 December 2014.

  20. Three dimensional velocity vector measurement using three beam based spectral domain Doppler optical coherence tomography.
    P Sharma, S Kumar, Y Verma and P K Gupta,
    National Laser Symposium (NLS-23), Sri Venkateswara University, Tirupati,  December 3-6, 2014..

  21.  Spatially-offset Raman spectroscopy (SORS) of paraffin-embedded tissue blocks
    Khan M Khan,  Khan M. Khan, S. B. Dutta, *S. K. Majumder and P K Gupta,
    National Laser Symposium (NLS-23), Sri Venkateswara University, Tirupati, December 3-6, 2014. 

  22. Raman spectroscopy for simultaneous determination of urea and creatinine National Laser Symposium (NLS-23),
     Sandeep Kumar, Hemant Krishna, Shovan K. Majumder and P K Gupta
    Sri Venkateswara University, Tirupati,  December 3-6, 2014.

  23. Interaction of Gaussian beam with microspheres: Effect of off-axis excitation ,
    P K Kushwaha, C Debnath, M K Swami, A Uppal, H S Patel and P K Gupta,
     National Laser Symposium (NLS-22) Manipal University, January 8-11 2014.  

  24. Dual beam based absolute velocity measurement using single detector spectral domain Doppler optical coherence tomography
    S Kumar, Y Verma, P Sharma, R Srimali and P K Gupta,
    National Laser Symposium (NLS-22) Manipal University, January 8-11 2014. 

  25. Imaging of normal and cancerous hamster cheek pouches using polarization sensitive optical coherence tomography ,
    P Sharma, Y Verma, A Dube, S Kumar and P K Gupta,
    National Laser Symposium (NLS-22), Manipal University, January 8-11 2014.

  26.  Use of optical tweezers to visualize tunneling nanotubes (TNTs) in tumor spheroids and for measurements of elastic parameters of TNSs,
    P Patheja, R Dasgupta, A Dube and P K Gupta,
    National Laser Symposium (NLS-22) Manipal University, January 8-11 2014.

  27. Separation of microparticles in a concentrated sample using opto electronic tweezers
    R S Verma, N Kumar, S Ahlawat and P K Gupta,
    National Laser Symposium (NLS-22) Manipal University, January 8-11 2014.

  28. Antimicrobial photodynamic treatment induced by red light and poly-L- lysin conjugated chlorine p6 leads to enhanced nitrite level and healing in Methicilin resistant Staphylococcus aureus (MRSA) infected wounds of diabetic mice.
    K Sahu, H Bansal, M Sharma, A Dube and P K Gupta,
    National Laser Symposium(NLS-22) Manipal University, January 8-11 2014.

  29. Antimicrobial photodynamic treatment induced oxidative stress reduced inflammatory response in Methicilin resistant Staphylococcus aureus infected wounds in diabetic mice
    K Sahu, M Sharma, H. Bansal, A Dube and P K Gupta,
     IX DAE-BRNS Life Science Symposium (LSSS-2013) Bhabha Atomic Research Centre, Mumbai,  November 28-30, 2013..  

  30. Photon counting based Uranium Analyser
    C Rajan, I Dave, R Bhandare, S Shyam Sundar S Raja and P K Gupta,
     National Laser Symposium (NLS-21),  BARC, Mumbai,  February 6-9, 2013.CP-12-10

  31. Self-assembled planer nano structure for efficient enhancement of Raman signal
    P K Kushwaha, H S Patel, M K Swami, A Uppal and P K Gupta,
    National Laser Symposium (NLS-21)  BARC, Mumbai, February 6-9, 2013.CP-11-18.

  32.  Effect of complexing with silica nanoparticle on the photodynamic toxicity of curcumin
    S P Singh, M Sharma and P K Gupta,
    National Laser Symposium (NLS-21) BARC, Mumbai, February 6-9, 2013.CP-11-05

  33. Development of 2D vector graphics based application software with control electronics for Laser Materials Processing applications
    I Dave, R Bhandare, S Raja and P K Gupta,
    National Laser Symposium (NLS-21) BARC, Mumbai,   

  34. Manipulation of microparticles and red blood cells using opto-electronic tweezers
    R. S. Verma, R. Dasgupta, N. Kumar, S. Ahlawat, A. Uppal and P K Gupta,
    National Laser Symposium (NLS-21)BARC, Mumbai, February 6-9, 2013.CP-11-17.  

  35. Effect of complexing with silica nanoparticle on the photodynamic toxicity of curcumin
    S P Singh, M Sharma and P K Gupta,
    National Laser Symposium (NLS-21) BARC, Mumbai, February 6-9, 2013.CP-11-05.  

  36.  Versatile laser micro-fabrication techniques for Lab-on-Chip (LOC) devices in general and uranium analysis in particular
    A Malik, S Raja and P K Gupta,
    National Laser Symposium (NLS-21) BARC, Mumbai,  February 6-9, 2013.CP-01-06. This paper received the ILA Best Poster Award.  

  37. Micro-fluidic based dye laser : Initial experiments
    A Malik, S Raja and P K Gupta,
     National Laser Symposium (NLS-21) BARC, Mumbai, February 6-9, 2013.CP-01-49  

  38. Effect of pH on Uptake and Phototoxicity of Folate Receptor Targeted Organically Modified Silica Nanoparticles Entrapped with Pyropheopharbide-a on Breast and Oral cancer cells
    S P Singh, M Sharma, B Jain and P K Gupta,
    National Symposium on Radiation and Photochemistry NEHU  Shillong, 2013.  

  39. Optical trapping with low numerical aperture objective lens
    R Dasgupta, A Ahlawat, P K Gupta, J Xavier and J Joseph,
     11th International Conference on Fiber Optics and Photonics, (PHOTONICS-2012), Indian Institute of Technology, Chennai, December 09-12, 2012.  

  40. Depolarization Characteristics of Non Spherical Gold Nano Particles
    M K Swami, H S Patel, A Uppal, P K Kushwaha and P K Gupta,
    11th International Conference on Fiber Optics and Photonics(PHOTONICS-2012), Indian Institute of Technology, Chennai, December 09-12, 2012.

  41.  Effect of Surface Interactions on Diffusion of Molecules: Fluorescence Correlation Spectroscopic Investigation
    H S Patel, M K Swami, A Malik, P K Kushwaha, S S Raja and P K Gupta,
    11th International Conference on Fiber Optics and Photonics (PHOTONICS-2012), Indian Institute of Technology, Chennai, December 09-12, 2012.  

  42. Dynamically Reconfigurable Interferometric Optical Tweezers: Tailoring 3D Colloidal Lattices and Tunable Micromachines
    J Xavier, R Dasgupta, S Ahlawat, J Joseph and P K Gupta,
    11th International Conference on Fiber Optics and Photonics (PHOTONICS-2012), Indian Institute of Technology, Chennai,  December 09-12, 2012.  

  43. Optical trapping with low numerical aperture objective lens
    R Dasgupta, S Ahlawat, P K Gupta, J Xavier and J Joseph,
    Photonics Global Conference, Nanyang Technological University, Singapore December13-16, 2012.  

  44. Variation of in vivo Raman spectra over different anatomical locations of normal oral cavity and its effect on oral tissue classification
    H Krishna, S K Majumder, M Sidramesh, P Chaturvedi and P K Gupta,
    23rd International Conference on Raman Spectroscopy (ICORS-2012), Indian Institute of Science, Bangalore, August 12-17, 2012

  45.  Raman spectroscopic detection of urea in turbid media
    K M Khan, H Krishna, M Soharab, S K Majumder, and P K Gupta, 
    23rd International Conference on Raman Spectroscopy,(ICORS-2012), Indian Institute of Science, Bangalore, August 12-17, 2012.  

  46.  Optically trappable surface enhanced Raman spectroscopy probes with non-spherical nanoparticles
    S Ahlawat, A Uppal, R Dasgupta, K Das and P K Gupta,
     23rd International Conference on Raman Spectroscopy,(ICORS-2012), Indian Institute of Science, Bangalore, August 12-17, 2012.

  47. Photodynamic treatment induced changes in expression of inflammatory cytokines and growth factors in Pseudomonas aeruginosa infected excisional wounds of mice
    5th Congress of the Federation of Immunological Societies of Asia-Oceania (FIMSA-2012),All India Institute of Medical Science at New Delhi,  March 14-17, 2012.  

  48.  Inductively Coupled Nitrogen laser ,
    Rajan C, S Shyam Sundar, Sendhil Raja and P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012). 

  49. Laser Induced Fluorescence Spectroscopy Combined with Optical Coherence Tomography for Tissue Analysis ,
    R. I. Dsouza, H. Krishna, K. M. Khan, K. Divakar Rao, S. K. Majumder and P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  50. Spectroscopic investigations on the binding of dyes to negatively charged gold nanorods ,
    R. Shrivastava, B. Jain, P K Gupta and K. Das,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  51. Image pattern based selection and sorting of micro particles using holographic optical tweezers ,
    R. S. Verma, R. Dasgupta, S. Ahlawat and P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  52.  Assessment of effect of formalin fixation on tissue birefringence using polarization sensitive optical coherence tomography ,
    P. Sharma, Y. Verma, K. D. Rao, and P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  53. Optical forces on microspheres in holographic optical trap arrays
    S. Ahlawat, R. Dasgupta, R. S. Verma, N. V. Kumar and P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  54. LED Based Combined Fluorescence and Diffuse Reflectance System for Tissue Analysis,
    S. K. Majumder, H. Krishna, Y. Kumar, K. M. Khan and P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  55.  Development of a Shack Hartmann wave-front sensor for wavefront analysis of large size, high peak power laser beams ,
    S. A. Pai, B. Pant, S. Raja, M. P. Kamath, S. Jain, A. P. Kulkarni, A. S. Joshi, P. A. Naik, P K Gupta, and P. D. Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  56.  Laser micro structuring of optical polymers and fused silica using 157nm laser for micro-optical and micro-fluidic systems ,
    Asmita Malik, Sendhil Raja S., P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  57. Optical Fiber sensor for Photoacoustic Spectroscopy,
    Jithin Thomas, Shyam Sundar S., Sendhil Raja S., P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  58. Trace water vapour Detection by Cavity Ring Down Spectroscopy ,
    Shyam Sundar S., Asmita Malik, Sendhil Raja S., P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  59. A comparative study of transient response of photodiodes with Nitrogen laser ,
    Rajan C, Shyam Sundar S., Asmita Malik, Sendhil Raja S. and P K Gupta,
    National Laser Symposium, (NLS-20), Anna University, Chennai, January 9-12, 2012, (2012).

  60. Optical Coherence Tomography for non-invasive assessment of wound healing response in P.aeruginosa infected excisional wounds subjected to photodynamic treatment ,
    K Sahu, Y Verma, M Sharma, K Divakar Rao, A Dube and P K Gupta,
    36th OSI Symposium on Frontiers in Optics and Photonics (FOP11), Indian Institute of Technology, New Delhi, December 3-5, 2011.

  61. Studies on the influence of tobacco habit on the fluorescence spectra of healthy oral mucosa ,
    H Krishna, S K Majumder, M Sidramesh, P Chaturvedi and P K Gupta,
    36th OSI Symposium on Frontiers in Optics and Photonics (FOP11), Indian Institute of Technology, New Delhi, December 3-5, 2011.  

  62.  Raman spectroscopy for the detection of antibiotic in honey ,
    K M Khan, H Krishna, S K Majumder and P K Gupta,
    36th OSI Symposium on Frontiers in Optics and Photonics (FOP11), Indian Institute of Technology, New Delhi, December 3-5, 2011.

  63. Depth-sensitive Raman spectroscopy combined with optical coherence tomography for analysis of layered tissue ,
    K M Khan, H Krishna, K Divakar Rao, S K Majumder and P K Gupta,
    36th OSI Symposium on Frontiers in Optics and Photonics (FOP11), Indian Institute of Technology, New Delhi, December 3-5, 2011.

  64. Diffusiion of chlorin p6- across phosphatidyl choline liposome bilayer probed by SHG ,
    R K Saini, P K Gupta and K Das,
    DAE-BRNS theme meeting (ETALAN-2011), Bhabha Atomic Research Centre, Mumbai, October 20-21, 2011.

  65. Automation of FBTR pin inspection system using FPGA
    K M Khare, S A Pai, B C Pant, S Sendhil Raja and P K Gupta,
    National Symposium on Advanced Measurement Techniques and Instrumentation (SAMTI-2011), Bhabha Atomic Research Centre, Mumbai, February 2-4, 2011.

  66. A comparative evaluation of Raman and fluorescence spectroscopy for optical diagnosis of oral neoplasia ,
    S K Majumder, H Krishna, M Sidramesh, P Chaturvedi and P K Gupta,
    10th International Conference on Fiber Optics and Photonics (PHOTONICS-2010), Indian Institute of Technology, Guwahati, December 11-15, 2010.

  67. Detection of urea adulteration in milk using near infrared Raman spectroscopy ,
    H Krishna, S K Majumder, S Tenguria and P K Gupta,
    10th International Conference on Fiber Optics and Photonics (PHOTONICS-2010), Indian Institute of Technology, Guwahati, December 11-15, 2010.

  68. Non-invasive imaging of ethanol-induced eye defects in zebrafish larvae using optical coherence tomography,
    K Divakar Rao, P Upadhyaya, M Sharma and P K Gupta,
    10th International Conference on Fiber Optics and Photonics (PHOTONICS-2010), Indian Institute of Technology, Guwahati, December 11-15, 2010.  

  69.  Use of common path phase sensitive spectral domain optical coherence tomography for refractive index measurements ,
    Y Verma, P Nandi, K D Rao, M Sharma and P K Gupta,
    10th International Conference on Fiber Optics and Photonics (PHOTONICS-2010), Indian Institute of Technology, Guwahati, December 11-15, 2010. 

  70. Swept source based fiber optic polarization sensitive optical coherence tomography setup for tissue birefringence ,
    P Sharma, Y Verma, K D Rao and P K Gupta,
    10th International Conference on Fiber Optics and Photonics (PHOTONICS-2010), Indian Institute of Technology, Guwahati, December 11-15, 2010.  

  71. Minimization of photodamage on trapped sperm cells using laguerre-gaussian laser mode ,
    R Dasgupta, S Ahlawat, R S Verma, S Shukla and P K Gupta,
    10th International Conference on Fiber Optics and Photonics (PHOTONICS-2010), Indian Institute of Technology, Guwahati, December 11-15, 2010.  

  72. Conjugation of chlorin p6 to histamine enhances efficacy of photodynamic treatment in human breast cancer cells
    8th International Symposium on Photodynamic Therapy and Photodiagnosis in Clinical Practice, University of Padova - Italy, October 6-9, 2010

  73. Evaluation of photobactericidal effect of poly-L-lysine-chlorine p6 conjugate in Pseudomonas aeruginosa infected wounds,
    International Conference on Antimicrobial Research (ICAR-2010), Valladolid, Spain, November 3 - 5, 2010.  

  74. Fiber Optic based RPM/Displacement Transducer,
    Ishant Dave, S. Sendhil Raja and P. K. Gupta
    International Conference on Instrumentation (ICI-2009) & National Symposium on Instrumentation (NSI-34), Cummins College of Engineering for Women, Karvenagar, Pune,
    during 21-23 January 2010.

  75. Fluorescence spectroscopy for non-invasive early diagnosis of oral mucosal malignant and potential malignant lesions ,
    P Chaturvedi S K Majumder, H Krishna, M Sidramesh and P K Gupta,
    Annual Meeting of the American Head and Neck Society, Las Vegas, USA,
    April 28-29, 2010. This paper received the Robert Maxwell Byers Award for the best clinical research paper presented at the meeting.

  76. Evaluation of photodynamic efficacy of Chlorin-p6 bound to amine modified silica nanoparticles in Colon and Oral cancer cell lines ,
    Abha Uppal, Beena Jain, Alok Dube, Kaustuv Das and P K Gupta,
    DAE-BRNS National Laser Symposium (NLS-19), RRCAT, Indore, December 1-4, 2010, (2010).

  77.  Development of a Spectral Imaging System for Tissue Imaging ,
    H. Krishna, S. K. Majumder, K. Divakar Rao and P K Gupta,
    DAE-BRNS National Laser Symposium (NLS-19), RRCAT, Indore, December 1-4, 2010, (2010).

  78.  Multi-Class Classification of Optical Coherence Tomography Images of Human Tissue ,
    H. Krishna, K. Divakar Rao, S. K. Majumder, M. Bhattacharjee and P K Gupta,
    DAE-BRNS National Laser Symposium (NLS-19), RRCAT, Indore, December 1-4, 2010, (2010).

  79.   Noninvasive assessment of response of curcumin treated and untreated wounds in mice by Optical Coherence Tomography ,
    K. Sahu, Y. Verma, M. Sharma, K. D. Rao, P K Gupta,
    DAE-BRNS National Laser Symposium (NLS-19), RRCAT, Indore, December 1-4, 2010, (2010).

  80.  Removal of Specular Reflections from Mueller matrix measurements ,
    M. K. Swami, S. Manhas, H. S. Patel and P K Gupta,
    DAE-BRNS National Laser Symposium (NLS-19), RRCAT, Indore, December 1-4, 2010, (2010). 

  81. Plasmon-molecular resonance coupling: Chlorin-p6 adsorbed on poly-L-lysine coated silver nanoparticles ,
    R. Saini, B. Jain, P K Gupta and Kaustuv Das,
    DAE-BRNS National Laser Symposium (NLS-19), RRCAT, Indore, December 1-4, 2010, (2010)..

  82.  Raman Spectroscopy for in vivo diagnosis of oral neoplasia ,
    S K Majumder, H Krishna, M Sidramesh, P Chaturvedi and P K Gupta,
    9th DAE-BRNS National Laser Symposium (NLS-09), BARC, Mumbai, January 13-16, 2010, (2010).

  83. Effect of thermal damage on the ex-vivo Raman and fluorescence characteristics of hepatic tissues
    H Krishna, S K Majumder and P K Gupta,
    9th DAE-BRNS National Laser Symposium (NLS-09), BARC, Mumbai, January 13-16, 2010, (2010).
    This paper received the ILA Best Poster Award.
     
  84. Effect of thermal damage on the ex-vivo Raman and fluorescence characteristics of hepatic tissues
    H Krishna, S K Majumder and P K Gupta,
    9th DAE-BRNS National Laser Symposium (NLS-09), BARC, Mumbai, January 13-16, 2010, (2010).
    This paper received the ILA Best Poster Award.

  85. Anti-IGF-1R antibody and folic acid tagged near infrared absorbing gold nanoshells for optical imaging and photo-thermal treatment of breast cancer cells
    Rashmi Shrivastava and P K Gupta,
    5th World Congress on Cellular and Molecular Biology (WCCMP-2009), Devi Ahilya Vishwavidyalaya, Indore, November 2-6, 2009.  

  86. Oxygen-Vacancy-Related Dielectric Relaxation and Electrical Conduction in KNbO3 Ceramic ,
    Gurvinderjit Singh, V S Tiwari and P K Gupta,
    International Conference on Electroceramics (ICE-2009), University of Delhi, Delhi, 2009, (2009).

  87. Evaluation of photodynamic efficacy of chlorin p6- histamine conjugate in oral cancer cell lines ,
    Parihar Arpana, Dube Alok and Gupta P K,
    the symposium on Frontiers in Photobiology (FIP-2009), BARC, Mumbai, August 24-26, 2009, (2009).

  88.  Biophotonics – Studies at RRCAT ,
     P K Gupta,
    the symposium on Frontiers in Photobiology (FIP-2009), BARC, Mumbai, August 24-26, 2009. (2009).

  89.  Measurement of Elastic properties of resected human breast tissue samples using Optical Coherence Tomography ,
    A. Srivastava, Y. Verma, K. D. Rao and P. K. Gupta,
    proceedings of DAE-BRNS National Laser Symposium, (NLS–08), LASTEC, New Delhi, January 07-10, 2009, (2009). 

  90. Light induced toxicity of merocyanine-silica nanoparticle complex,
    K. Das, A. Uppal, B. Jain, B. Bose and P. K. Gupta,
    International Conference on Nano Science and Technology (ICONSAT 2008), Chennai, February 27-29, 2008..  

  91.  Nonlinear optical properties of silver nanoprisms under femtosecond laser excitation,
    B. Jain, A. Uppal, P. K. Gupta and K. Das,
    International Conference 011 Soft Systems (ICSS2008), Jadavpur, February 13-15, 2008.

  92. Photophysical studies on 8-anilino- I-naphthalene sulfonic acid (ANS) bound to silica nanoparticles,
    B. Jain, A. Uppal, P. K. Gupta and K. Das,
    Trombay Symposium of Radiation & Photochemistry, Pune, January 7-11, 2008.

  93. Near-infrared Raman spectroscopy for In-vivo diagnosis of human oral cavity neoplasia,
    S. K. Majumder, M. K. Swami, H. S. Patel, S. S. Nayyar and P. K. Gupta,
    Optics within Life Sciences (OWLS) Biophotonics Asia, Singapore, July 2-4, 2008

  94. A new approach for Mueller matrix measurement using fiber based optical coherence tomography,
    M. K. Swami, Y. Verma, S. Manhas, K. D. Rao, N. Ghosh and P. K. Gupta,
    OWLS Biophotonics Asia, Singapore, July 2-4, 2008  

  95. On achieving phase only modulation from reflective type twisted nematic liquid crystal SLM at oblique incidence,
    R. S. Verma, M. K. Swami, S. Manhas and P. K. Gupta,
    OWLS Biophotonics Asia, Singapore, July 2-4, 2008  

  96. Analysis of optical coherence tomographic images for binary classification of resected human breast tissues,
    K. D. Rao, P. C. Ashok, M. Bhattacharjee, Y. Verma, S. K. Majumder and P. K. Gupta,
    OWLS Biophotonics Asia, Singapore, July 2-4, 2008 

  97.  In-vivo diagnosis of human oral cancer using near infrared Raman spectroscopy,
    S. K. Majumder, H. S. Patel, M. K. Swami, S. S. Nayaar, Fakhruddin and P. K. Gupta,
    International Conference on Fiber Optics and Photonics (PHOTONICS-2008), New Delhi, 15-17 Dec. 2008

  98. Combined Raman spectroscopy-optical coherence tomography (RS-OCT) for analysis of tissue pathology,
    S. K. Majumder, Y. Verma, K. D. Rao, M. K. Swami and P. K. Gupta,
    International Conference on Fiber Optics and Photonics (PHOTONICS-2008), New Delhi, 15-17 Dec. 2008   

  99. A general background subtraction algorithm for biomedical Raman spectroscopy  
    Swami M. K., Pate] H. S., Majumder S. K., Gupta P. K. 5th 
    International Symposium on Modern Problems in Laser Physics: MPLP - 08, Novosibirsk, Russia, Aug. 2008 

  100.  A Raman background subtraction scheme using variable entrance slit  
    Swami M. K., Patel H. S., Majumder S. K., Gupta P. K   
    International Conference on Fiber Optics and Photonics (PHOTONICS-2008), New Delhi, 15-17 Dec. 2008  

  101. On achieving phase only modulation from reflective type twisted nematic liquid crystal SLM at oblique incidence
    Verma R.S., Swami M. K., Manhas S., Gupta P. K.
    Optics Within Life Science - 10, Singapore, 2-4 Jul. 2008.  

  102.  Polarization sensitive optical coherence tomography for imaging of human breast tissue
    Verma Y., Gautam M., Rao K. D. , Swami M. K., Gupta P. K.
    5th International Symposium on Modern Problems in Laser Physics: MPLP-08, Novosibirsk, Russia, Aug. 2008  

  103.  In-Vivo imaging of adult zebrafish using optical coherence tomography
    Y. Verma Y., Rao K. D., Gupta P. K.
    Workshop on Optical Coherence Tomography and Adaptive Optics, Canterbury, UK, 8-10 Sept. 2008    

  104. Effect of incubation time on photodynamic inactivation of human colon adenocarcinoma cells due to endogenously synthesized protoporphyrin IX induced by delta-aminolevulinic acid methyl ester ,
    K Sahu, M Sharma and P K Gupta,
    International Conference on LIGHT AND LIFE (ISLL-2007), University of Hyderabad, Hyderabad, August 29-31,2007..   

  105.  Effect of Methylene Blue photosensitization on antibiotic resistance of E. coli ,
    K Sahu, R Rai, M Sharma, H Bansal and P K Gupta,
    International Conference on Frontiers of Radiation and Photochemistry (PHOTORADCHEM-2007), Mahatma Gandhi University, Kottayam, February 8-11, 2007.

  106.  A histological assessment of the influence of Helium-Neon laser irradiation on hair follicle growth in testosterone treated mice ,
    Sunita Shukla, K Sahu, A Dube and P K Gupta,
    International Conference on Frontiers of Radiation and Photochemistry (PHOTORADCHEM-2007), Mahatma Gandhi University, Kottayam, February 8-11, 2007.

  107. pH Dependent Binding of Chlorin-p6 with Phosphatidyl Choline Liposomes: Comparison Between One and Two-photon Excited Fluorescence
    K. Das, B. Jain, A. Dube and P. K. Gupta,
    Trombay Symposium on Radiation & Photochemistry (TSRP-2006) from January 5-9 (2006).

  108. Spectral Relaxation dynamics of three Coumarin dyes in Chloroform
    B. Jain and K. Das,
    ibid.   

  109. Manipulation of microscopic objects using microbubble formed on the nanotube-functionalised conical fiber tip
    K. S. Mohanty, S. K. Mohanty, K. D. Rao and P. K. Gupta
    Conference on Lasers    and Electro Optics, Optics & Photonics, held in USA (2006).

  110. RBC under optical tweezers as cellular motors and Rockers: microfluidic applications
    S. K. Mohanty, K. S. Mohanty and P. K. Gupta,
    ibid

  111.   Non-Invasive Ophthalmic Imaging of Adult Zebrafish eye using Optical Coherence Tomography
    K. Divakar Rao, Y. Verma, H. S. Patel and P. K. Gupta
    Proceedings of International conference on lasers Electrooptics (ICOL), Dehradun, Dec, 12-15, 2005. 

  112. Multiclass classification algorithm for optical diagnosis of cancer
    S. K. Majumder, A. Gupta, S. Gupta, N. Ghosh and P. K. Gupta
    ibid.

  113.  Trapping and controlled rotation of low-refractive index particles using optical tweezers
    S. K. Mohanty, R. S. Verma and P. K. Gupta,
    ibid.

  114. Photodynamic effects of endogenously synthesize protoporphyrins induced by delta aminolevulinic acid methyl ester on human colon adenocarcinoma and squamous    carcinoma cells
    K. Sahu, M. Sharma, P. K. Gupta,   
    Life Science Symposium, Mumbai, ( 2005)

  115.  Resolution of fluorophore depth in a turbid medium by polarized fluorescence spectroscopy,
    N Ghosh, S. K. Majumder and P. K. Gupta
    Abstract Book of Conference on Lasers and Electro Optics San Francisco, California, USA, May 16-21, 2004.

  116. Controlled spatial orientation of birefringent microscopic particles using optical trap with polarization grating S K Mohanty, K Divakar Rao and P. K. Gupta,
    ibid.

  117.  Micro fabrication and actuation of micro fluidic valve using trapped cylindrical objects
    S K Mohanty, K Dave and P. K. Gupta
    Seventh international conference on optoelectronics, fiber optics and photonics, Photonics 2004, Cochin, Dec. 9-11, 2004.

  118. Cancer diagnosis using N2 Laser excited auto fluorescence spectroscopy of formalin-fixed human tissue
    S. K. Majumdar, R Kumar, N Ghosh, P. K. Gupta, p-18,
    ibid.
     
  119. Independent component analysis for optical diagnosis of cancer
    S. K. Majumdar, N Ghosh, P. K. Gupta, p-26,
    ibid  
     
  120. In-vivo and in-vitro imaging of biological tissues using a fiber optic based optical coherence tomography setup
    Yogesh Verma, M S Hrebesh, H. S. Patel, K Divakar Rao and P. K. Gupta, p-17,\
    ibid.
     
  121. Measurement of orbital angular momentum of a single photon: A non-interferrometric approach
    R. Dasgupta, P. K. Gupta, pp 415-416,
    ibid.
     
  122. Characterization of laser diode end-pumped intracavity frequency doubled, passively Q-switched and modelocked Nd: YVO4 laser.
    P. K. Mukhopadhyay, K. Ranganathan, S. K. Sharma, A. Kuruvilla, P. K. Gupta, J. George and T. P. S. Nathan Proc.
    DAE-BRNS National Laser Symposium, Dec. 22-24, 2003, IIT Kharagpur, pp137-138.
     
  123.  Detection of milk adulteration using fluorescence spectroscopy.
    S. Gupta, N.C. Biswal, N. Ghosh and A. Pradhan
    ibid, pp 619-620.
     
  124. Fluorescence spectroscopic study of honey and cane sugar.
    N. Ghosh, Y. Verma, S. K. Majumder and P. K. Gupta
    ibid, pp 631-632.
     
  125. Laser induced fluorescence for screening of oral cancer.
    S. K. Majumder, N. Ghosh and P. K. Gupta
    ibid, pp 633-634.
     
  126. Rotation of microscopic isotropic particles using transfer of spin angular momentum of light.
    R. Dasgupta and P. K. Gupta
    ibid, pp 635-636.
  127. Nile blue in Triton X-100/Benzene/Hexane reverse micelles: A fluorescence spectroscopic study.
    K. Das, B. Jain and H. S. Patel.
    ibid, pp 637-638. .
     
  128. A spectroscopic study of photobleaching of chlorin p-6 in different environments.
    K. Das, A. Dubey and P. K. Gupta
    ibid, pp 639-640..
     
  129. Rotation of microscopic biological objects using optical tweezers.
    S. K. Mohanty, R. dasgupta and P. K. Gupta
    ibid, pp 643-644.

  130.  Manipulation of metallic microscopic particles using optical tweezers.
    S. K. Mohanty, K. D. Rao and P. K. Gupta
    ibid, pp 646-647.
     
  131. Non-invasive Intra-tissue Micromanipulation and 3D Sorting of Intracellular Organelles within Intact Living Higher Plants with Near Infrared Laser Traps.
    U. K. Tirlapur, S. K. Mohanty, B. Jain, K. König and P. K. Gupta Proc.
    DAE-BRNS National Laser Symposium, SCTIMST, Trivandrum, Nov. 14-16, 2002, pp 287-288.
     
  132. Effect of Nitrogen Laser (337 nm) Irradiation on Clinical Isolates of Mycobacterium Tuberculosis.
    A. Dube, L. Prabakaran, K. Jayasankar, V. Kumar and P. K. Gupta,
    ibid., pp. 289-291.
     
  133. Enhancement of Photodynamic Action of Delta-Aminolaevulinic Acid Induced Protoporphyrins in Antibiotic Resistant Strain of Pseudomonas Aeruginosa by Glutathione.
    M. Sharma, H. Bansal and P. K. Gupta,
    ibid., pp. 292-293.
     
  134. Fluorometric Estimation of Concentration of NADH from Human Blood Samples.
    A. Uppal, N. Ghosh, A. Datta and P. K. Gupta ,
    ibid., pp. 294-295.
     
  135. Membrane Damage Kinetics of Cells under Nd: YAG Laser Trapping.
    S. K. Mohanty, B. Jain, M. Sharma, A. Uppal and P. K. Gupta,
    ibid, pp. 296-297.
     
  136. 11.3 Watt of cw IR power at 1064 nm from diode end-pumped Nd: YVO4 laser.
    P. K. Mukhopadhyay, K Ranganathan, J George, S K Sharma, P. K. Gupta and T P S Nathan,
    ibid., pp. 142-144.

  137. Pump power induced thermal lensing and diffraction losses in Nd:CNGG crystal.
    P. K. Mukhopadhyay, K Ranganathan, P. K. Gupta and T P S Nathan,
    ibid., pp. 145-147.
     
  138. Experimental determination of thermo-optic coefficient of a-axis cut Nd: GdVO4.
    P. K. Mukhopadhyay, K Ranganathan, N Muthukumaran, J George, S K Sharma, P. K. Gupta and T P S Nathan,
    ibid., pp. 148-150.
     
  139.  Stretching of RBC using single point tweezers.
    S K Mohanty, M Parlikad, A. Uppal and P. K. Gupta, 2002, Photonics 2002, Sixth Int. Conf. on Optoelectronics, Fiber Optics and Photonics, TIFR, Mumbai, Dec. 16-18, 2002.
     
  140. Laser-microinjection of MC 540 into MCF-7 cells.
    S K Mohanty, M. Sharma and P. K. Gupta, 2002, Photonics 2002, Sixth Int. Conf. on Optoelectronics, Fiber Optics and Photonics, TIFR, Mumbai, Dec. 16-18, 2002.
     
  141.  Optical binding between dielectric Rayleigh particles.
    S K Mohanty, J T Andrews and P. K. Gupta, 2002, Photonics 2002,
    Sixth Int. Conf. on Optoelectronics, Fiber Optics and Photonics, TIFR, Mumbai, Dec. 16-18, 2002.
     
  142. Diagnostic and phototherapeutic applications of lasers
    P. K. Gupta,
    14th World congress of the International Society for Laser Surgery and Medicine, Chennai, India, August 27-30, 2001.
     
  143. Polarized fluorescence spectroscopy of human tissues.
    N. Ghosh, S. K. Majumder and P. K. Gupta, 2001,
    ibid.
     
  144. The effect of nitrogen laser (337nm) irradiation on mycobacterium tuberculosis.
    A. Dubey, K Jayashankar, L Prabhakar, Vanaja Kumar and P. K. Gupta, 2001,
    ibid.
     
  145.  Autofluorescence spectroscopy for diagnosis of cancer of oral cavity.
    S. K. Majumder and P. K. Gupta,
    ibid.
     
  146. Autofluorescence spectroscopy for diagnosis of cancer of oral cavity.
    S. K. Majumder and P. K. Gupta, ibid.
     
  147. Measurement of optical properties using optical coherence tomography.
    J T Andrews, H. S. Patel and P. K. Gupta, Proc. DAE-BRNS National Laser Symposium, CAT, Indore, Dec. 19-21, 2001, pp. 207-208.
     
  148. The effect of pH on the aggregation behavior of Chlorin p6 : a fluorescence spectroscopic study.
    A Dutta, A. Dubey, B. Jain, A Tiwari and P. K. Gupta,
    ibid., pp. 357-358.
     
  149. Porphyrin synthesis induced by delta aminolevulinic acid and their photodynamic action in antibiotic resistant strain of pseudomonas aeruginosa.
    M. Sharma, H. Bansal and P. K. Gupta,
    ibid, pp 359-360.
     
  150. Generation of ROS in CHO and HeLa cells by CW and pulsed near-infrared trapping and micro-beam
    S K Mohanty, M. Sharma and P. K. Gupta,
    ibid, pp 361-362.
     
  151.  Photodynamic inactivation of HeLa and COLO cells using two-photon excitation of MC-540 by pulsed Nd:YAG laser.
    S K Mohanty, M. Sharma and P. K. Gupta,
    ibid, pp 363-364
     
  152. Light scattering studies of edible fats.
    N Ghosh, A Datta and P. K. Gupta,
    ibid, pp 365-366.
     
  153. Effects of scatterer size on polarization gated optical imaging.
    N Ghosh, M Awasthi, B N Singh, P. K. Gupta and S. K. Majumder,
    ibid, pp 367-368
     
  154. Polarization memory of scattered light.
    N Ghosh, P. K. Gupta, S. K. Majumder and B N Singh,
    ibid, pp 369-370.
     
  155.  In-vivo fluorescence studies on the accumulation of various photosensitizers in fibrosarcoma bearing mice.
    A. Dube, M. Sharma, A Tiwari and P. K. Gupta,
    ibid, pp 371-372..
     
  156. Photodynamic inactivation of human breast carcinoma cells (MCF-7) using Chlorin p6 , a photosensitizer prepared from chlorophyll-a.
    A Tiwari, A. Dube and P. K. Gupta,
    ibid, pp 373-374
     
  157. Development of a laser trap – microbeam set up at CAT.
    S K Mohanty, N Ghosh and P. K. Gupta Proc.
    National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 49-50
     
  158. Two-dimensional optical imaging through turbid medium using stimulated Raman scattering.
    K Divakar Rao, B. Jain, H. S. Patel and P. K. Gupta,
    Proc. National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 266-267
     
  159.  Determination of optical properties of tissue phantoms using single shot streak camera.
    B. Jain, K Divakar Rao and P. K. Gupta,
    Proc. National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 303-304.
     
  160. Autofluorescence spectroscopy of human leucocytes.
    AbhA. Uppal, S. K. Majumder and P. K. Gupta, Proc.
    National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 319-320..
     
  161.  Interaction of merocyanine 540 with carcinoma of cervix and adenocarcinoma of breast cells.
    M. Sharma, H. Bansal and P. K. Gupta, Proc.
    National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 325-326
     
  162.  In-vivo fluorescence diagnosis of the cancer of oral cavity.
    S. K. Majumder, N Ghosh, S K Mohanty and P. K. Gupta, Proc.
    National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 327-328.
     
  163. Fluorescence depolarization in a turbid medium – effect of size parameter of scatterer.
    N Ghosh, S. K. Majumder, S K Mohanty and P. K. Gupta,
    Proc. National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 329-330
     
  164. Irradiance dependence of the mechanisms for He-Ne laser irradiation induced protection against UVC radiation in E-coli strains.
    R Kohli and P. K. Gupta,
    Proc. National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 331-332.
     
  165.  In-vitro and in-vivo study of the bio-kinetics of d -ALA induced endogenous protoporphyrin IX for effective photodynamic therapy.
    D Parmeswaran, N Ramamurty, P Gunasekaran, P Aruna, P. K. Gupta and S Ganesan Proc.
    National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 333-334.
     
  166. Theoretical modeling of photobleaching during photodynamic therapy: Monte Carlo simulation.
    D Parmeswaran, P Aruna, P. K. Gupta and S Ganesan,
    Proc. National Laser Symposium, LASTEC, Delhi, Dec 13-15, 2000, pp. 335-336.
     
  167. Nonlinear transmission studies in tetraphenyl porphyrin based doped glass using picosecond pulses.
    K. Divakar Rao, S. Anantha Ramakrishna and P. K. Gupta,
    National Laser Symposium, University of Hyderabad, Dec 15-17, (1999), pp. 159-160
     
  168. Numerical simulation of transient stimulated Raman scattering in hydrogen. Vishwajeet Jha, K. Divakar Rao and P. K. Gupta,
    ibid, pp. 333-334.
     
  169. Oxidation of hemoglobin by nitrogen laser. Biplab Bose, C. Murali Krishna and P. K. Gupta,
    ibid, pp. 361-362
     
  170. Red light protects B-lymphoblasts from UVA induced radiation damage. A. Dube, C. Block, E. Bauer, R. Kohli, P. K. Gupta and K. O. Greulich,
    ibid , pp 363-364.
     
  171. Elastic scattering spectroscopy of human breast tissues.
     N. Ghosh, S. K. Majumder, S. K. Mohanty and P. K. Gupta,
    ibid, pp 367-368.
     
  172.  Induction of photoreactivating enzyme (pre) in E-coli strain KY706/pPL-1 by He-Ne laser irradiation.
     R. Kohli, B. Bose and P. K. Gupta,
    ibid, pp 371-372.
     
  173.  Autofluorescence spectroscopy of normal and cancerous cultured human breast cell lines.
     S. K. Majumder, Leo Wollweber, P. K. Gupta and K. O. Greulich,
    ibid, pp 375-376.
     
  174. Porphyrin accumulation by mammalian cells after exposure to d -aminolevulinic acid.
     S. K. Majumder, Volker Uhl, Leo Wollweber, P. K. Gupta and K. O. Greulich,
    ibid pp377-378.
     
  175.  Fluorescence depolarization by light scattering in human breast tissues
    S. K. Mohanty, N. Ghosh, S. K. Majumder and P. K. Gupta,
    ibid, pp 381-382.
     
  176. Photosensitized oxidation of L-tryptophan by eosin-Y: characterization by fluorescence technique,
    D. Parameswaran, K. Swathy, P. Aruna, P. K. Gupta and S. Ganesan,
    ibid, pp 385-386.
     
  177. High Resolution Molecular Spectroscopy of Methanol: It’s Connection with Optically Pumped Far Infrared Lasers. I. Mukhopadhyay,
    Proc. National Symposium on Recent Advances in Laser and Molecular Spectroscopy, February 26-28, 1998, Gorakhpur.
     
  178. The comet assay to study cold DNA repair in B-lymphoblasts and identification of peritoneal macrophages after UV-A irradiation, C. Bock,
    H. Dittmar, A. Dube, P. K. Gupta and K.O. Greulich, Proceedings of the DGZ Heidelberg Meetings, DKFZ, Heidelberg 1998
     
  179. Laser induced fluorescence diagnosis of breast and oral cavity tissue - role of NADH concentration.
    A. Uppal, S. K. Majumder and P. K. Gupta. Proc. National Laser Symposium,
    Dec. 14-16, IIT Kanpur (1998) pp. 219-220.
     
  180. Depolarization studies of autofluorescence from human tissues
    S. K. Mohanty, S. K. Majumder and P. K. Gupta.
    ibid, pp. 215-216.
     
  181. Measurement of optical parameters of human breast tissues.
    N. Ghosh, S. K. Mohanty, S. K. Majumder and P. K. Gupta.
    ibid, 217-218.
     
  182.  Studies on optical imaging through turbid medium using Streak camera.
    B. Jain and P. K. Gupta.
    ibid, 199-200
     
  183. Interaction of methylene blue with red blood cells. C.
    Murali Krishna, B. Bose and P. K. Gupta.
    ibid, 229-230
     
  184. Stimulation of activity of enzymes by He-Ne lasers irradiation in mice peritoneal macrophages.
    H. Bansal, A. Dubey and P. K. Gupta.
    ibid, 227-228
     
  185. Third beam diffraction as a probe to measure thickness of sandwiched films.
    A. Sharan, K. Divakar Rao and K. K. Sharma,
    ibid, 176-177
     
  186. Development of fibre optic pH sensor based on phenol red indicator dye,
    S. Gurusankar and P. K. Gupta,
    Proc. National Laser Symposium, 1997, CAT, Indore, pp. 157-158.
     
  187. Development of fibre optic pH sensor based on phenol red indicator dye,
    S. Gurusankar and P. K. Gupta, Proc. National Laser Symposium, 1997,
    CAT, Indore, pp. 157-158.
     
  188. Optical spectroscopic studies on cancerous, benign and normal human breast tissues,  
    S. K. Majumder, A. Uppal and P. K. Gupta,
    ibid, pp.293-294.
     
  189.  Time-resolved fluorescence spectroscopy of normal and malignant human breast tissue,  
    B. Jain and P. K. Gupta,
    ibid, pp.295-296.
     
  190. Optically Pumped Mid-Infrared and Far-Infrared Laser Emissions from NH3,
    M.M. Nagarkar, D.D. Saha, I. Mukhopadhyay and P. K. Gupta,  
    Proc. National Laser Symposium, IPR, Ahmedabad, Dec. 10-12 , pp. 39-40 ( 1997).  
     
  191. Measurement of optical parameters of biological samples by photoacoustic technique.
    A.K. Ghosh, M.M. Nagarkar and P. K. Gupta,
    ibid, pp. 269-270.  
     
  192. Estimation of relative concentration of fluorophores in cancerous, benign and normal human breast tissues using autofluorescence spectroscopy.
    S. K. Majumder and P. K. Gupta,
      ibid,pp 271-272.
     
  193. Autofluorescence spectroscopic studies on malignant and normal oral mucosa.
    S. K. Majumder, A. Uppal and P. K. Gupta,
    ibid, 284-285
     
  194. Synchronous luminescence spectroscopic studies on human tissues. 
    S. K. Majumder and P. K. Gupta,
    ibid, pp 286-287.
     
  195. Estimation of light transport parameters in tissues using coherent back scattering of light, 
    S. Antharamakrishna, K. Divakar Rao, P. K. Gupta.,
    ibid, pp.
     
  196.   In-vitro studies on human breast malignancy using nitrogen laser excited autofluorescence spectroscopy,   
    S. K. Majumder, A. Uppal and P. K. Gupta,  TL8-3, Abstract book, 6th Int. conf. on Laser Applications in Life Sciences, Jena , Germany (1996).  
     
  197. Laser Stark and Fourier Transform Spectroscopy of Methanol-D4, 
    I. Mukhopadhyay, P. K. Gupta and G.R. Sudhakaran,   
    Proc. International Conference on Spectroscopy Perspectives & Frontiers (INCONS), Bhabha Atomic Research Centre, Bombay, January 3-5 W-09, p. 56 (1996)..  
     
  198.  Autofluorescence spectroscopy of malignant and normal human tissue.
     P. K. Gupta , S. K. Majumder, A. Uppal, A. Dubey, B. Jain and A.G. Bhujle
      ibid, 318-319
     
  199. Stimulation of Electron transfer in E-coli by He-Ne laser irradiation: Cytochrome d as photoacceptor,
    A. Dube, P. K. Gupta and S. Bharti,  
    Proc. National Symposium, Bombay, Jan 17-19 (1996) , pp. K.13-K14.
     
  200. Photodynamic inactivation of Bacillus subtilis cells by Dye + He-Ne Laser irradiation : The involvement of free radicals,  
    A. Dube, H. Bansal and P. K. Gupta,
    ibid, pp. K.7-K8.
     
  201.  Development and characterization of a UV-visible streak camera and its use for time resolved fluorescence studies on human tissues,  
    B. Jain, P. K. Gupta, V. A. Podvyaznikov and V. K. Chevokin,
    ibid, pp C3-C4.
     
  202. In-vitro studies on N2 laser induced autofluorescence spectra for discrimination of malignant from surrounding normal human tissue.
    S. K. Majumder, A. Uppal, P. K. Gupta Proc.
    National Laser Symposium, IRDE, Dehradun, pp 290-291 (1995)..  
     
  203. He-Ne laser induced protection against UVC stress in E-coli strains,
    R. Kohli and P. K. Gupta,
    ibid, pp 292-293
     
  204. The Effect of low level nitrogen laser irradiation on testes of albino rats,
    A. Sharma, P. K. Gupta, S. Sachdeva and S. Agnihotri,
    ibid, 275-276
     
  205. Effect of N2 laser irradiation on the scrotal skin of Indian albino rabbit
    A. Sharma, P. K. Gupta, S. Agnihotri and S. Sachdeva
    Laser Therapy, 6, 36 (1994).
     
  206.  Effect of He-Ne laser irradiation on the respiratory components of E- coli.
    A. Dubey, P. K. Gupta and S. Bharati Proc. National Laser Symposium, CAT, Indore,
    pp 316-317 (1994).
     
  207. Histological changes in the integument of albino rabbit following N2 laser irradiation.
    A. Sharma, P. K. Gupta, S. Agnihotri and S. Sachdeva Proc. National Laser Symposium, IIT, Madras,
    pp 324-325(1993).
     

Invited Talks

  1.  Use of optical spectroscopic and imaging techniques for biomedical diagnosis,
    P K Gupta,
    Workshop on Achieving In situ Functional Histology , 21-22 March 2015, IIT Kharagpur, Kharagpur  

  2. Biomedical Applications of Lasers,
    P K Gupta,
    National Seminar on Science for National Development , VNIT, Nagpur, 14-15 March 2015,

  3.  Photonics for health care applications: Studies at RRCAT,
    P K Gupta,
    Frontiers of Biology : The DAE Spectra , Saha Institute of Nuclear Physics, Kolkata, 21-22 January 2015 

  4. Optical Spectroscopy for Biomedical Diagnosis,
    P K Gupta,
    International Conference on Frontiers of Spectroscopy, Physics Department, BHU, 10 January 2015

  5. Raman Spectroscopic Studies on Optically Trapped Red Blood Cells,
    P K Gupta,
    International Conference on Fiber Optics and Photonics, (PHOTONICS – 2014), Indian Institute of Technology Kharagpur, 13 –16 December (2014)..

  6.  Raman Spectroscopy for Biomedical Applications,
    P K Gupta,
    National Workshop on Fluorescence & Raman Techniques, IISER, Pune, 18 December 2014.  

  7. Photonics for health care applications,
    P K Gupta,
    Keynote address, DAE-BRNS National Laser Symposium, S. V. University, Tirupati, December 3 - 6, 2014.

  8.  Development and utilization of optical techniques for health care applications,
    P K Gupta,
    Recent Advances in Optical Sciences (RAOS), University of Hyderabad, 26 April 2014.

  9.  Development and utilization of optical techniques for health care applications,
    P K Gupta,
    Plenary Talk at International Conference on Recent Trends in Physics, Devi Ahilya University, Indore, 22-23 February 2014.

  10. Spectroscopic and mechanical investigations on cells/ intra-cellular objects using optical tweezers,
    P K Gupta,
    Trombay Symposium on Radiation & Photochemistry (TSRP-2014), Mumbai, 6-9 January 2014.  

  11. Optical techniques for biomedical imaging and diagnosis,
    P K Gupta,
    Winter School on Photonics, IISER, Kolkata, 26-29 December 2013.

  12. Photonics Applications in Biomedical Imaging and Diagnosis,
    P K Gupta,
    Laser World of Photonics India, Mumbai, 13 November 2013.. 

  13.  Nanophotonics, National Workshop on Nanophotonics,
    P K Gupta,
    Shri G S Institute of Technology & Science, Indore, 26 September 2013. 

  14. Effect of complexing with silica nanoparticles on the phototoxicty of some photosensitisers,
    P K Gupta,
    International Conference on Materials for Advanced Technology, Suntec, Singapore, 30 June to 5 July, 2013. .

  15. Development and utilization of optical techniques for biomedical diagnosis,
    P K Gupta,
    First National Conference of Indian Association of Laser Surgery & Medicine, Indore, 27 July 2013.

  16.   Development and utilization of optical techniques for medical diagnostics,
    P K Gupta,
    Synergy in Physics and Industry (SPI-2013), BARC, Mumbai, 21 – 22 January 2013.

  17. Laser Applications-Current Trends,
    P K Gupta,
    Laser World of Photonics India, Mumbai, 14 September, 2012. .

  18. Photonics in Medicine and Biology,
    P K Gupta,
    National Workshop on Photonics in Medicine and Biology CAMP, Manipal University, Manipal, 20-22 August 2012..

  19.  Biomedical Applications of Lasers,
    P K Gupta,
    International Conference on Laser Advances In Science Engineering and Research ICLASER2012, M. S. Ramaiah Institute of Technology, Bangalore, 8 June, 2012  

  20. Biophotonics- Studies at RRCAT
    P K Gupta,
    Ninety ninth Indian Science Congress Physical Sciences Section, KIIT, Bhubaneshwar, 5 January 2012. 

  21. Biophotonics- Studies at RRCAT,
    P K Gupta,
    Plenary talk at XXXVI OSI Symposium on Frontiers in Optics and Photonics (FOP 11), 03-05 December 2011.

  22.  Fluorescence Spectroscopy for Cancer Diagnosis,
    P K Gupta,
    National Fluorescence Workshop, ICGEB, New Delhi, 15 November 2011..  

  23.  Use of Optical Techniques to Manipulate and Probe Cells / intra-cellular objects,
    P K Gupta,
    Workshop on Recent Trends in Nanophotonics, Indian Institute of Technology Delhi, 30 September 2011.  

  24.  Biomedical applications of lasers,
    P K Gupta,
    National Physical Laboratory, 23 September 2011..  

  25. Optical Manipulation and Spectroscopic Investigations on Cells / intra-cellular objects,
    P K Gupta,
    HCU-TIFR Discussion Meeting on Modern Optics, Hyderabad Central University, Hyderabad, 1-3 August 2011.  

  26.  Biomedical applications of lasers,
    P K Gupta,
    IIT Gandhinagar, 8 April 2011.  

  27.  Biophotonics- An Introduction,
    P K Gupta,
    DST-SERC School on Guided Wave Optics and Devices, CGCRI, 07-25 February 2011..

  28. Biomedical Applications of Optical Imaging & Spectroscopy,
    P K Gupta,
    International Conference on Fiber Optics and Photonics, (PHOTONICS – 2010), Indian Institute of Technology Guwahati, December 11 –15, 2010.

  29. Optical Imaging and Diagnosis - Some Recent Developments at RRCAT,
    P K Gupta,
    DAE- BRNS National Laser Symposium (NLS-19), RRCAT, Indore, 1-4 December 2010.  

  30. Use of optical spectroscopic and imaging techniques for biomedical diagnosis,
    P K Gupta,
    Indo-US workshop on Applications of Molecular Imaging in Health, Disease & Drug Discovery, Centre for Cellular & Molecular Biology, Hyderabad, 8-10 November 2010..  

  31. Biomedical applications of lasers,
    P K Gupta,
    National Workshop on Recent advances in Biotechnology & Biochemical Engineering, IPS Academy, Indore, 20 October 2010..  

  32. Optical Manipulation and Spectroscopic Investigations on Cells / intra-cellular objects,
    P K Gupta,
    International Conference on Physics of Emerging Functional Materials (PEFM – 2010), BARC, Mumbai, 22-24 September 2010..  

  33. Biomedical applications of lasers,
    P K Gupta, LASERFEST, IIT Delhi, 19 September 2010..  

  34. Biomedical applications of lasers: An overview of the activities at RRCAT
    P K Gupta,
    University of Texas, Arlington,
    17 August 2010 and also at The University of Alabama at Birmingham, Birmingham, 19 August 2010.  

  35.  Raman Spectroscopy for Biomedical Diagnosis,
    P K Gupta, S K Majumder and R Dasgupta,
    XXII International Conference on Raman Spectroscopy (ICORS-2010), Boston, USA, 09-13 August, 2010.

  36. Optical techniques for biomedical imaging and diagnosis,
    P K Gupta,
    Plenary talk.at Indo-French workshop on Biomedical Applications of Vibrational Spectroscopy and Imaging, Mumbai, 13-15 February 2010. .  

  37. Nanotechnology for Health and Water: A Perspective,
    P K Gupta,
    Plenary talk.at IBSA School on Health and Water, Pretoria, South Africa, 22 to 27 November 2009. .  

  38. Biophotonics – Studies at RRCAT,
    P K Gupta,
    National symposium on Frontiers in Photobiology, BARC, Mumbai, 24 - 26 August 2009..

  39. Biomedical Applications of Lasers, Physics for Technology: a Vision,
    P K Gupta,
    At a meeting to commemorate Dr. V C Sahni’s glorious contributions to Physics & Technology, BARC, 27 July 2009. Also at RRCAT on 29 July 2009.  

  40. Raman spectroscopy for diagnosis of cancer,  
    S. K. Majumder,
    DAE-BRNS National Laser Symposium, New Delhi, 7-10 January, 2009

  41. Laser manipulation of cells and sub-cellular objects
    P. K. Gupta   
    Indo-US Workshop on Science and Technology at the Nano-Bio Interface, Bhubaneswar, February 19 -22, 2008.

  42. Biomedical applications of light
    P. K. Gupta ISRAPS Workshop on Radiation and Photochemistry, Mumbai, January 3-5, 2008  .  

  43. Biomedical applications of lasers
    P. K. Gupta
    MEDBIO-2008 & Third Industry Academia Meet, Bhopal, February 14-16,2008 .  

  44. Optical techniques for biomedical imaging, diagnosis and therapy
    P. K. Gupta
    BRNS-Basic Sciences School on Condensed Matter Interface with Chemistry and Biology, Mumbai, March3-14, 2008.  

  45. Optical techniques for biomedical diagnosis and for the manipulation of microscopic biological objects
    P. K. Gupta
    Workshop on Laser Spectroscopy and Nanophotonics, Delhi, March 14-15,2008   . 

  46. Biomedical applications of laser spectroscopy
    P. K. Gupta SERC School on Laser Spectroscopy & Applications in Science & Technology, Mumbai, 03-21 Nov. 2008.  

  47. Biophotonics Photonics
    P. K. Gupta India Review 2008, Bangalore, 16-17 Oct. 2008 .  

  48. Biophotonics - studies at RRCAT
    P. K. Gupta Indo - UK Workshop on Fiber Optics, Photonics and Bio-Instrumentation, Cochin, 2-5 Sep. 2008.

  49.  Biophotonics - studies at RRCAT
    P. K. Gupta 19th mid-year meeting of the Indian Academy of Sciences, Bangalore, 4-5 Jul. 2008.

  50. Optical studies on red blood cells
    P. K. Gupta
    LALS2008 (The International Conference on Laser Applications in Life Science 2008), Taipei, Taiwan, 4-6 Dec. 2008

  51. Use of light to study and manipulate blood cells
    P. K. Gupta International Conference on Fiber Optics and Photonics (PHOTONICS-2008), New Delhi, 15-17 Dec. 2008  

  52. Optical Coherence Tomography
    K. Divakar Rao
    Seminar on Lasers in medicine and biosciences, Department of Physics, Karnataka University, Dharwad, March 2007. .  

  53. Laser Manipulation of Microscopic Objects – Some Recent Developments
    P. K. Gupta 3rd Asia and Pacific Rim Symposium on Biophotonics, APBP07, Cairns, Australia, during July 9 –11, 2007

  54. Optical coherence Tomography
    K. Divakar Rao
    SERC School on Biophotonics, RRCAT, Feb 6-24, 2006. .
     
  55. Diffuse Optical Tomography
    H. S. Patel.
    ibid
     
  56. Tissue optics
    N. Ghosh,
    ibid.
     
  57. Light effects on biological systems Alok Dube,
    ibid. 
     
  58. Phototodynamic effects & applications M. Sharma,
    ibid..
     
  59. Basic optics
    S. K. Mohanty,
    ibid.
     
  60. Fluorescence spectroscopy for biomedical diagnosis
    P. K. Gupta,
    ibid
     
  61. Laser manipulation of microscopic objects-potential device applications
    P. K. Gupta
    Indo-French workshop on ‘Molecular and organic devices’, May 22-24 (2006).
     
  62. Biophotonics - studies at RRCAT
    P. K. Gupta Recent advances in fiber optics and photonics, IIT Roorkee, Roorkee, August 25 – 27, 2006..
     
  63. Optical coherence Tomography.
    K. Divakar Rao,
    National Laser Symposium Dec. 2006  
     
  64. Optical Imaging and Diagnosis.
    P. K. Gupta
    Eighth International Conference on Optoelectronics, Fiber Optics and Photonics Photonics 2006, University of Hyderabad, December 13-16, 2006.
     
  65.  Laser manipulation of microscopic objects
    P. K. Gupta
    International conference on Lasers Electrooptics (ICOL), Dehradun (2005).
     
  66. Biophotonics
    P. K. Gupta,
    National Laser Symposium Dec. 2005.
     
  67. Optical diagnosis and therapy for improved health care.
    P. K. Gupta
    91st Indian Science Congress, January 3-7, 2004
     
  68. Biomedical Optics: An Introduction.
    P. K. Gupta
    International Conference on Mathematical Biology, IIT Kanpur, 19-21 Feb. 2004.
     
  69. Statistical Pattern Recognition for Optical Diagnosis of Cancer.
    S. K. Majumder
    International Conference on Mathematical Biology, IIT Kanpur, 19-21 Feb. 2004..
     
  70. Theoretical Modeling of Fluorescence Propagation in Biological Tissue: Applications in Optical Diagnosis of Cancer.
    N. Ghosh
    International Conference on Mathematical Biology, IIT Kanpur, 19-21 Feb. 2004. 
     
  71. Laser Induced Fluorescence Spectroscopy for Cancer Diagnosis Workshop on Biomedical Optics and Related Topics,
    S. N. Bose
    National Centre for Basic Sciences Calcutta, 23-25 Feb. 2004.
     
  72. Statistical Pattern Recognition for Optical Diagnosis of Cancer. S. K. Majumder Workshop on Biomedical Optics and Related Topics,
     S. N. Bose
    National Centre for Basic Sciences Calcutta, 23-25 Feb. 2004. .
     
  73. Depolarization of Light in Turbid Medium. N. Ghosh Workshop on Biomedical Optics and Related Topics,
    S. N. Bose
    National Centre for Basic Sciences Calcutta, 23-25 Feb. 2004.
     
  74. Optical coherence Tomography. K. Divakar Rao Workshop on Biomedical Optics and Related Topics
    S. N. Bose
    National Centre for Basic Sciences Calcutta, 23-25 Feb. 2004.
     
  75.  Fluorescence based early detection of cancer.
    P. K. Gupta
    CEP Course on Fluorescence techniques in biological research, INMAS, Delhi, 24-28 February 2003.
     
  76. Laser Induced Fluorescence Spectroscopy for Cancer Diagnosis.
    S. K. Majumder
    National Seminar on Recent Trends in Physics, Holkar Science College, Indore.
     
  77. Micromanipulations with Lasers.
    S. K. Mohanty
    DAE-BRNS National Laser Symposium 2003, 1-4 December 2003, IIT Kharagpur.
     
  78. Biomedical applications of lasers.
    P. K. Gupta
    89th Indian Science Congress, January 3-7, 2002, Lucknow.
     
  79. Laser induced fluorescence spectroscopy for cancer diagnosis.
    P. K. Gupta Photonics 2002,
     Sixth Int. Conf. on Optoelectronics, Fiber Optics and Photonics, TIFR, Mumbai, Dec. 16-18, 2002.
     
  80.  Biomedical applications of lasers.
    P. K. Gupta
    University Department of Chemical Technology, University of Mumbai, 2 February 2001.
     
  81. Biomedical applications of lasers.
    P. K. Gupta
    Discussion meeting on biomolecular studies using neutrons and X-rays, 10-11 January, BARC, Mumbai, 2001..
     
  82. Diagnostic and phototherapeutic applications of lasers.
    P. K. Gupta
    14th world Congress of the International Society for Laser Surgery and Medicine, Chennai, India, August 27-30, 2001.
     
  83. Laser induced fluorescence spectroscopy for diagnosis of cancer.
    P. K. Gupta
    International Symposium on Luminescence and its Applications. M. S. University of Baroda, Baroda, 7-10 February, 2000. .
     
  84. Biomedical applications of lasers-Studies at CAT.
    P. K. Gupta
    National Laser Symposium, LASTEC, Delhi, Dec. 13-15, 2000.
     
  85. Laser induced fluorescence spectroscopy for detection and characterization of neoplastic tissue.
    P. K. Gupta
    Cancer Research Institute, Mumbai, 6 February 1999.
     
  86.  Laser induced fluorescence spectroscopy for early diagnosis of cancer.
    P. K. Gupta
    Zaheer memorial lecture, Dr. B. R. Ambedkar Center for Biomedical Research, Delhi, 28 May 1999.
     
  87. Laser Safety and Laser induced fluorescence spectroscopy for cancer diagnosis.
    P. K. Gupta
    XVI DAE Safety Professionals meet, CAT, Indore, November 11-13, 1999.
     
  88. Laser induced fluorescence spectroscopy for cancer diagnosis.
    P. K. Gupta
    National Laser Symposium, IIT Kanpur, Kanpur, Dec. 14-16, 1998.
     
  89. Laser applications in medical diagnosis and photobioactivation.
    P. K. Gupta
    National Laser Symposium, CAT, Indore, Feb. 6-8, 1997.
     
  90. Laser induced fluorescence spectroscopy for detection and characterization of neoplastic tissue.
    P. K. Gupta
    Symposium on ‘Applications of photodynamic technology in health care’, INMAS, Delhi, Dec. 1997.
     
  91. Optical parametric oscillators.
    P. K. Gupta
    Workshop on Non-linear Optics, CAT, Indore, 22-26 July, 1996.
     
  92. Detection of cancer with laser induced fluorescence.
    P. K. Gupta
    WHO workshop on early detection of breast, cervical and oral cancers, Cancer Care Trust and Research Foundation, Indore, April 12-13 (1995).
     
  93. Lasers in Medicine.
    P. K. Gupta
    16th AMPI Annual Conference on Medical Physics, Defence Laboratory, Jodhpur, Nov. 8-11 (1995).
     
Best viewed in 1024x768 resolution