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Publications

Books/ Book Chapters

  1. 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).

  2. 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).

  3. Laser Sources.
    P. K. Gupta,
    In, 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).

  4. 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, 143-161 (1997).

In Journals

On Biomedical Applications of Lasers

  1. Non-invasive assessment of healing of bacteria infected and uninfected wounds using optical coherence tomography.
    Sahu K, Verma Y, Sharma M, Rao K. D, Gupta PK.
    To appear in Skin Res Tech, (2010)

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

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

  4. Interaction of ANS and TNS with Organically Modified Silica Nanoparticles in Aqueous Media
    B. Jain, A. Uppal,P. K. Gupta, K. Das
    Adv. Sci. Lett., 3, 225-230 (2010).

  5. Effect of helium-neon laser irradiation on hair follicle growth cycle of Swiss albino mice.
    Shukla S, Sahu K, Verma Y, Rao KD, Dube A, Gupta PK.
    Skin Pharmacol Physiol. 23:79-85. (2010)

  6. Spectroscopic Investigations on the Binding of the Photosensitizer Chlorin p6 with Amine-modified Silica Nanoparticles in Aqueous Media,
    Jain B., Uppal A., Gupta P.K., Das K.
    Photochemistry and Photobiology, 85, 927-933, (2009)

  7. Real-time in vivo imaging of adult Zebrafish brain using optical coherence tomography,
    Rao D., A. Alex, Verma Y., S. Thampi, Gupta P. K.
    Journal of Biophotonics, 2, 288-291 (2009)

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

  9. He - Ne laser (632.8 nm) pre-irradiation gives protection against DNA damage induced by a near-infrared trapping beam,
    Sahu K., Mohanty S. K., Gupta P. K.
    J. Biophot. 2, 140-144 (2009)

  10. Atomic force microscopic study on morphological alterations induced by photodynamic action of Toluidine Blue O in Staphylococcus aureus and Escherichia coli,
    Sahu K., Bansal H., Mukharjee C., Sharma M., Gupta P.K.
    J. Photochem. Photobio. B, 96, 9-16 (2009)

  11. Polarized diffuse reflectance measurements on cancerous and noncancerous tissues,
    Manhas S, Swami M. K., Patel H.S., Uppal A., Ghosh N., Gupta P.K.
    J. Biophoton. 2, 581–587 (2009)

  12. Toluidine blue-mediated photodynamic effects on staphylococcal biofilms.
    Sharma, M., Visai, L., Bragheri, F., Cristiani, I., Gupta, P.K., Speziale, P.
    Antimicrob. Agents & Chemo., 52, 299-305 (2008)

  13. Surface-plasmon-resonance enhancement: effects on optical trapping and manipulation of nano-objects,
    Mohanty S.K., Rao D., Gupta P.K.
    Journal of Nanophptonics, 2, 023509,(2008)

  14. Photodynamic efficacy of chIorin p6; A pH dependent study in aqueous and lipid environment,
    Bose B., Dubey A.
    Photochemistry and Photobiology B 93, 32-35 (2008)

  15. Optofluidic stretching of RBCs using single optical tweezers,
    Mohanty S.K., Uppal A., Gupta P.K.
    Journal of Biophotonics, 1, 522-525 (2008)

  16. Influence of endodontic chemical treatment on Enterococcus faecalis adherence to collagen studied with laser scanning confocal microscopy and optical tweezers: a preliminary study
    CheePeng Sum, Mohanty S.K., Gupta P.K. Anil Kishen
    Journal of Biomedical Optics, 13, 044017 (2008)

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

  18. Imaging growth dynamics of tumour spheroids using optical coherence tomography.
    Sharma, M., Verma, Y., Rao, K.D., Nair, R., Gupta, P.K.
    Biotech. Lett., 29, 273-278 (2007)

  19. Trapping and controlled rotation of low-refractive-index particles using dual line optical tweezers.
    Mohanty, S.K., Verma, R.S., Gupta, P.K.
    Appl. Phys. B., 87, 211-215 (2007)

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

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

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

  23. Optical coherence tomography using a tapered single mode fiber tip.  
    Verma, Y., Rao, K.D., Mohanty, S.K., Gupta, P.K.
    Laser Phys. Lett., 4, 686-689 (2007)

  24. Self-rotation of an assembly of two or more cylindrical objects in optical tweezers: A simple approach for realization of optically driven micromotors.
    Mohanty, S.K., Gupta, P.K., Verma, R.S.
    Current Science, 93, 695-698 (2007)

  25. 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)

  26. 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)

  27. 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)

  28. Evaluation of chlorin p6 for photodynamic treatment of squamous cell carcinoma in hamster cheek pouch model.
    Alok Dube, Sulbha Sharma, and P K Gupta
    Oral Oncology 42, 76-81 (2006)

  29. 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)

  30. 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)

  31. 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)

  32. 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)

  33. 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)

  34. 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)

  35. 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)

  36. Interaction of Chlorin p6 with bovine serum albumin and photodynamic oxidation of protein.
    Bose, B., Dube, A.
    J. Photochem. Photobiol. B, 85, 49-55 (2006)

  37. Polar decomposition of 3 x 3 Mueller matrix: a tool for quantitative tissue polarimetry.
    Swami, M. K., Manhas, S., Buddhiwant, P., Ghosh, N.,  Uppal, A., Gupta, P. K.
    Opt. Express, 14, 9324-9337(2006)

  38. “Fluorimetric Estimation of concentration of NADH from Human Blood Samples”.
    Abha Uppal, N. Ghosh, A. Datta and P. K. Gupta,
    Biotechnology and Applied Biochemistry, 41, 43-47 (2005)

  39. 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)

  40. “Support Vector Machine for Optical Diagnosis of Cancer”.
    S. K. Majumder, N. Ghosh, P. K. Gupta,
    Journal of Biomedical Optics, 10, 024034 (2005)

  41. pH dependent binding of Chlorin-p6 with Phosphatidyl Choline liposomes.
    K. Das, B. Jain, A. Dube and P. K. Gupta
    Chemical Physics Letters 401, 185-188 (2005)

  42. 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)

  43. 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)

  44. 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 J. Phy. 64, 229-238 (2005)

  45. Dynamics of Interaction of RBC with optical tweezers.
    S K Mohanty, K S Mohanty and P K Gupta
    Optics Express 13, 4745-4751 (2005)

  46. 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(1), 2005

  47. 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)

  48. 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), Rapid Communication

  49. 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)

  50. 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)

  51. Transport of microscopic objects using asymmetric transverse optical gradient force.
    S K Mohanty, and P K Gupta
    Appl. Phys. B 81, 159 – 162 (2005)

  52. 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)

  53. 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)

  54. 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 DOI: 10.1007/s00280-005-0072-x (2005)

  55. 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)

  56. “Nile blue in triton x-100/benzene/hexane reverse micelles: a fluorescence spectroscopic study”.
    K Das, B Jain and H S Patel
    Spectrochimica Acta, Part-A,  60, 2059-2064 (2004)

  57. “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)

  58. “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)

  59. “Controlled laser assisted 3D rotation of microscopic objects”.
    S. K. Mohanty and P.K. Gupta
    Review of Scientific Instruments,  75 (7), 2004

  60. “Optical binding between dielectric particles”.
    S. K. Mohanty, J. T. Andrews and P. K. Gupta,
    Optics Express, 12, 2749 (2004)

  61. “A Spectroscopic study of photobleaching of  Chlorin p6 in different environments”.
    K. Das, A. Dube, and P. K. Gupta,
    Dyes & Pigments , 64, 201-205 (2004)

  62. “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)

  63. Nitrogen laser irradiation (337 nm) causes temporary inactivation of clinical isolates of Mycobacterium tuberculosis.
    Alok Dube, K. Jayasankar, L. Prabakaran, V. Kumar and P.K. Gupta.
    Laser in Medical Science, 19, 52-56 (2004)

  64. "Measurement of NADH concentration in normal and malignant human tissues from breast and oral cavity”.
    Uppal and P. K. Gupta,
    Biotechnology and Applied Biochemistry, 37, 45-50, (2003)

  65. "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)

  66. “Laser assisted microinjection into targeted cells”.
    S K. Mohanty, M Sharma and P K. Gupta,
    Biotechnology Letters, 25, 895-899, (2003)

  67. “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)

  68. “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)

  69. “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

  70. "Modulation of macrophage structure and function by low level He - Ne laser irradiation”.
    Dube, H. Bansal and P. K. Gupta,
    Photochemical and Photobiological Sciences, 2, 851-855 (2003)

  71. “Induction of phr gene expression in E. coli strain KY706/pPL-1 by UVA (365 nm) irradiation”.
    Abha Uppal, R Kohli, P K Gupta, and P S Dubey,
    Annals of Microbiology. 53(3), 329-336 (2003)

  72. “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)

  73. “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)

  74. “Fluorescence depolarisation 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)

  75. “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)

  76. “The effect of pH and surfactant on the aggregation behaviour of Chlorin p6 : a fluorescence spectroscopic study”.
    A Data, A. Dube, B. Jain, A. Tiwari and P.K.Gupta.
    Photochemistry and Photobiology, 75, 488-494 (2002)

  77. “In vivo Pharmacokinetics of δ-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)

  78. “Light scattering studies in edible fats”.
    N Ghosh, A Datta and P K Gupta,
    Applied Spectroscopy, 56, 1094 – 1097, (2002)

  79. “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)

  80. "Polarized fluorescence spectroscopy of human tissues”.
    N. Ghosh, S. K. Majumder, and P. K. Gupta,
    Optics Letters, 27, 2007-2009, (2002)

  81. “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)

  82. “Laser induced fluorescence spectroscopy of human tissue for cancer diagnosis”.
    S K Majumder and P. K. Gupta,
    Physics Teacher, 43(3), E17-E21, (2001)

  83. “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)

  84. “Depolarisation 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)

  85. “He-Ne laser irradiation protects B-lymphoblasts from UVA-induced DNA damage”.
    Dube, C. Block, E. Bauer, R. Kohli, P. K. Gupta and K. O. Greulich,
    Radiation and Environmental Biophysics 40, 77-82 (2001)

  86. “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)

  87. “Synchronous luminescence spectroscopy for cancer diagnosis”.
    S.K. Majumder and P.K. Gupta,
    Lasers in the Life Sciences 9,143-152 (2000)

  88. “Estimation of light transport parameters in biological tissues using coherent backscattering”.
    S A Ramakrishna and K Divakara Rao,
    Pramana- Journal of physics 54(2),255-267 (2000)

  89. “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)

  90. “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)

  91. “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)

  92. “Dye mediated photodynamic inactivation of bacillus subtilis cells : the involvement of singlet oxygen and superoxide radicals”.
    Dubey, H. Bansal and P.K. Gupta,
    Indian J Biochem. & Biophysics, 37,245-250, 2000

  93. “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)

  94. “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)

  95. “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)

  96. “Tissue optics”.
    P.K. Gupta,
    Current Science,76, 1341-1347 (1999)

  97. “Laser Applications in Medicine: Studies at Centre for Advanced Technology”.
    P.K.Gupta and D.D.Bhawalkar
    Current Science, 77, 925-933 (1999)

  98. “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)

  99. “Fluorescence study of maize irradiated by UVA”.
    S. Singh, A. Dubey and P. K.Gupta,
    Pure Appl.Optics, 7, L1-L4, (1998)

  100. “Laser applications in medical diagnosis and photobioactivation”.
    P. K. Gupta,
    Laser News, 9, 12-17 (1998)

  101. “Redox absorbance changes of the respiratory chain components of E-coli following He-Ne laser irradiation”.
    Dubey, P.K. Gupta and S. Bharti,
    Lasers in Life Sciences, 7, 173-180 (1997)

  102. “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)

  103. “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)

  104. “In-vitro diagnosis of human uterine malignancy usuing 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. Quantitative tissue polarimetry using polar decomposition of 3 x 3 Mueller matrix Swami M.K., S. Manhas, P. Buddhiwant, N. Ghosh, A. Uppal, Gupta P.K.   In Optical Technologies in Biophysics and Medicine VIII,Eds. Valery V. Tuchin,SPIE, Vol. 6535, 65350J, (2007).

  2. Tapered single mode fiber tip for high lateral resolution imaging in Optical Coherence Tomography
    Verma Y., Rao K. Divakar, Mohanty S. K. and Gupta P. K.
    SPIE 6436, Laser micromanipulation of microscopic objects Ed. V Tuchin,  64360Y (2007).

  3. Muller matrix approach for determination of optical rotation in chiral turbid media in backscattering geometry   Manhas S, Swami M.K.*, Buddhiwant P, Ghosh N., Gupta P.K., Singh K.  In Optical Technologies in Biophysics and Medicine VII,Eds. Valery V. Tuchin Proc. SPIE vol 6163,  61630W (2006).

  4. Photodynamic therapy of cancer: evaluation of Chlorin p6 as a potential photosensitizer
    M.Sharma, A.Dube, K.Das, P.K.Gupta
    ISRAP bulletin, page 39-41 (2006).
     
  5. 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, (Newsletter of Optical Society of America) end-of-year special issue, "Optics in 2006", page 41 Dec. 2006.

  6. 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, (Newsletter of Optical Society of America) end-of-year special issue “Optics in 2005", page 19 Dec. 2005.

  7. Laser micromanipulation of microscopic objects.
    S.K. Mohanty and P.K. Gupta
    CAT News Letter, page 15, Jan. 2004.
     
  8. 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 & Photonics News (Newsletter of Optical Society of America) end-of-year special issue, "Optics in 2004", page 19, Dec. 2004.  

  9. 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 2004", page 16, Dec. 2003.
     
  10. Nanosecond Near-Infrared Laser- Assisted Microinjection Into Targeted Cells
    S. K. Mohanty, M. Sharma and P. K. Gupta
    Optics & Photonics News (Newsletter of Optical Society of America) end-of-year special issue, "Optics in 2004", page 17, Dec. 2003.  

  11. Depolarization of light in turbid medium - effect of collection geometry.
    N. Ghosh, P.K. Gupta, H.S. Patel, B. Jain, and B.N. Singh
    SPIE Vol. 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, Ed. B. Chance, M. Chen, and G. Yoon, 151-156 (2002).
     
  12. Polarization gated optical imaging - effect of size parameter of scatterer.
    N. Ghosh, P.K. Gupta, H.S. Patel, and B.N. Singh
    ibid, 202-209 (2002).
     
  13. Shedding light on cancer detection.
    News India, page 13, February 2001.
     
  14. Indian group develops tools for oral cancer diagnosis.
    The Lancet Oncology, 2, 258, (2001).
     
  15. Laser induced fluorescence spectroscopy of human tissue for the diagnosis of cancer.
    P. K. Gupta
    ISRAPS Bulletin, 11, 18-25, April - June 2000.
     
  16. Laser induced fluorescence spectroscopy of human tissue for the diagnosis of cancer.
    P. K. Gupta
    Laser Horizon, 4, 56-61, July 2000.
     
  17. Biomedical applications of lasers.
    P. K. Gupta
    BARC Newsletter, 201, 13-26, October 2000.

  18. Synchronous luminescence spectroscopy of human breast tissue.
    S.K. Majumder and P.K.Gupta
    Proc. SPIE Vol. 3252, Optical diagnostics of biological fluids III, Ed. A.V. Priezzhev, 169-178 (1998).
     
  19. Autofluorescence spectroscopy of oral mucosa.
    S.K. Majumder, A. Uppal and P.K.Gupta, ibid, 158-168 (1998).
     
  20. Laser induced fluorescence spectroscopy for diagnosis of cancer.
    P.K. Gupta and S.K. Majumder
    CAT Newsletter, 8,Jan.-June 1995.
 Conference Proceedings/Symposium
  1. Light induced toxicity of merocyanine-silica nanoparticle complex  Das K., Uppal A., Jain B., Bose B., Gupta P.K.  International Conference on Nano Science and Technology (ICONSAT 2008), Chennai, February 27-29,2008

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

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

  4. Near-infrared Raman spectroscopy for In-vivo diagnosis of human oral cavity   neoplasia, technical program abstract Majumder S.K., Swami M.K., Patel H.S., Nayyar S.S., Gupta P.K. Optics Within Life Sciences-JO (OWLS-JO) BiophotonicsAsia, Singapore, July 2-4, 2008

  5. A new approach for Mueller matrix measurement using fiber based optical coherence tomography    Swami M.K., Verma Y, Manhas S., Rao K.D., Ghosh N., Gupta P.K.   Optics Within Life Scienc9-JO (OWLS-JO) BiophotonicsAsia, Singapore, July 2-4, 2008  

  6. 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 Sciences-JO (OWLS-JO) BiophotonicsAsia, Singapore, July 2-4, 2008  

  7. Analysis of optical coherence tomographic images for binary classification of resected human breast tissues    Rao K.D., Ashok P.C*., Bhattacharjee M.*, Venn a Y, Majumder S.K., Gupta P.K.   Optics Within Life Sciences-JO (OWLS-JO) BiophotonicsAsia, Singapore, July 2-4, 2008  

  8. In-vivo diagnosis of human oral cancer using nearinfrared raman spectrocopy Majumder S.K., Patel H.S., Swami M.K., Nayaar S.S. *, Fakhruddin*, Gupta P.K. International Conference on Fiber Optics and Photonics (PHOTONICS-2008), New Delhi, 15-17 Dec. 2008   

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

  10. 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 

  11. 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 

  12. 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   

  13. 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 

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

  15. 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).

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

  17. 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).  

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

  19. 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.  

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

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

  22. 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)

  23. 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 held at San Francisco, California, USA, May 16-21, 2004.  

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

  25. 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.  

  26. 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.  

  27. Independent component analysis for optical diagnosis of cancer
    S K Majumdar, N Ghosh, P K Gupta, p-26, ibid  

  28. 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.  

  29. Measurement of orbital angular momentum of a single photon: A non-interferrometric approach
    R Dasgupta, P K Gupta, pp 415-416, ibid.

  30. 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.  

  31. Detection of milk adulteration using fluorescence spectroscopy.
    S. Gupta, N.C. Biswal, N. Ghosh, and A. Pradhan
    ibid, pp 619-620.  

  32. Fluorescence spectroscopic study of honey and cane sugar.
    N. Ghosh, Y. Verma, S.K. Majumder, and P.K. Gupta
    ibid, pp 631-632.  

  33. Laser induced fluorescence for screening of oral cancer.
    S.K. Majumder, N. Ghosh, and P.K. Gupta
    ibid, pp 633-634.  

  34. Rotation of microscopic isotropic particles using transfer of spin angular momentum of light.
    R. Dasgupta and P.K. Gupta
    ibid, pp 635-636.  

  35. 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.  

  36. A spectroscopic study of photobleaching of chlorin p-6 in different environments.
    K. Das, A. Dubey, and P.K. Gupta
    ibid, pp 639-640.  

  37. Rotation of microscopic biological objects using optical tweezers.
    S.K. Mohanty, R. dasgupta, and P.K. Gupta
    ibid, pp 643-644.  

  38. Manipulation of metallic microscopic particles using optical tweezers.
    S.K. Mohanty, K.D. Rao, and P.K. Gupta
    ibid, pp 646-647.  

  39. 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, Karsten König and P. K. Gupta
    Proc. DAE-BRNS National Laser Symposium, SCTIMST, Trivandrum, Nov. 14-16, 2002, pp 287-288.  

  40. 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.  

  41. 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.  

  42. Fluorometric Estimation of Concentration of NADH from Human Blood Samples.
    A Uppal, N. Ghosh, A. Datta and P.K. Gupta , ibid., pp. 294-295.  

  43. 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.  

  44. 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.  

  45. 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.  

  46. 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.  

  47. 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.  

  48. 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.  

  49. 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.

  50. 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.  

  51. Polarized fluorescence spectroscopy of human tissues.
    N. Ghosh, S. K. Majumder, and P. K. Gupta, 2001, ibid.  

  52. The effect of nitrogen laser (337nm) irradiation on mycobacterium tuberculosis.
    A.Dubey, K Jayashankar, L Prabhakar, Vanaja Kumar, and P K Gupta, 2001, ibid.  

  53. Autofluorescence spectroscopy for diagnosis of cancer of oral cavity.
    S K Majumder and P K Gupta, ibid.  

  54. Novel scanning technique for OCT.
    J T Andrews, H S Patel, and P K Gupta, Optonics, 2001, Trivandrum.  

  55. 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.  

  56. 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.  

  57. 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.  

  58. 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.  

  59. 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.  

  60. Light scattering studies of edible fats.
    N Ghosh, A Datta and P K Gupta, ibid, pp 365-366.  

  61. 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.  

  62. Polarization memory of scattered light.
    N Ghosh, P K Gupta, S K Majumder, and B N Singh, ibid, pp 369-370.  

  63. 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.  

  64. 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.

  65. 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.  

  66. 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.  

  67. 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.  

  68. 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.  

  69. 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.  

  70. 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.  

  71. 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.  

  72. 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.  

  73. 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.  

  74. 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.  

  75. In-vitro studies on N2 laser excited autofluorescence from human breast tissues for the diagnosis of breast malignancy,
    S.K. Majumder, A. Uppal and P.K. Gupta,
    Abstract book, Int. Conf. on Spectroscopy : Perspectives and Frontiers (INCON S), Bombay, Jan 3-5 (1995)  

  76. 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).  

  77. 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).  

  78. 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).

  79. 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.  

  80. Numerical simulation of transient stimulated Raman scattering in hydrogen.
    Vishwajeet Jha, K. Divakar Rao and P. K. Gupta, ibid, pp. 333-334.
     
  81. Oxidation of hemoglobin by nitrogen laser.
    Biplab Bose, C. Murali Krishna and P.K.Gupta, ibid, pp. 361-362.  

  82. 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.  

  83. Elastic scattering spectroscopy of human breast tissues.
    N. Ghosh, S. K. Majumder, S. K. Mohanty and P. K. Gupta, ibid, pp 367-368.  

  84. 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.  

  85. 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.  

  86. 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.  

  87. 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.  

  88. 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.  

  89. High Resolution Molecular Spectroscopy of Methanol : Its 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.  

  90. 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.  

  91. 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.  

  92. Depolarization studies of autofluorescence from human tissues
    S.K.Mohanty, S.K.Majumder and P.K.Gupta. ibid, pp. 215-216.  

  93. Measurement of optical parameters of human breast tissues.
    N.Ghosh, S.K.Mohanty, S.K.Majumder, and P.K.Gupta. ibid, 217-218.  

  94. Studies on optical imaging through turbid medium using Streak camera.
    B.Jain and P.K.Gupta. ibid, 199-200.  

  95. Interaction of methylene blue with red blood cells.
    C.Murali Krishna, B.Bose and P.K.Gupta. ibid, 229-230.  

  96. 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.  

  97. Third beam diffraction as a probe to measure thickness of sandwiched films.
    A.Sharan, K.Divakar Rao and K.K.Sharma, ibid, 176-177.

  98. 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.  

  99. Morphological and biophysical changes in macrophage cell membrane by He-Ne laser irradiation,
    Alok Dubey and P.K. Gupta, ibid, pp.291-292.   

  100. Optical spectroscopic studies on cancerous, benign and normal human breast tissues,   S.K. Majumder, A.Uppal and P.K. Gupta, ibid, pp.293-294.  

  101. Time-resolved fluorescence spectroscopy of normal and malignant human breast tissue,   B. Jain and P.K. Gupta, ibid, pp.295-296.   

  102. 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). .   

  103.  Measurement of optical parameters of biological samples by photoacoustic technique. A.K. Ghosh, M.M. Nagarkar and P.K. Gupta, ibid, pp. 269-270.

  104. 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.

  105.  Autofluorescence spectroscopic studies on malignant and normal oral mucosa. S.K. Majumder, A. Uppal and P.K. Gupta, ibid, 284-285.  

  106.  Synchronous luminescence spectroscopic studies on human tissues.  S.K. Majumder and P.K. Gupta, ibid, pp 286-287. 

  107.  Estimation of light transport parameters in tissues using coherent back scattering of light   S. Antharamakrishna, K. Divakar Rao, P.K. Gupta., ibid, pp 

  108.    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).   

  109. 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).

  110.  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.  

  111.  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 K13-K14.

  112.  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 K7-K8.

  113.  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.   

  114.  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).

  115.  He-Ne laser induced protection against UVC stress in E-coli strains. R. Kohli and P.K. Gupta, ibid, pp 292-293.

  116.  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
    117.     
 

Invited Talks

 
  1. Raman spectroscopy for diagnosis of cancer,  S K Majumder,   DAE-BRNS Natiollal Laser Symposium (NLS2008), New Delhi, 7-10 January, 2009  

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

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

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

  5. Optical techniques for biomedical imaging, diagnosis and therapy  P.K.Gupta    BRNS-Basic Sciences School on Condensed Matter Intelface with Chemistl:J' and Biology, Mumbai, March3-14, 2008

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

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

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

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

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

  11. 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

  12. 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 

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

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

  15. Optical coherence Tomography
    K. Divakar Rao
    SERC School on Biophotonics, RRCAT, Feb 6-24, 2006.  

  16. Diffuse Optical Tomography
    H. S. Patel. ibid  

  17. Tissue optics
    N Ghosh, ibid.  

  18. Light effects on biological systems
    Alok Dube, ibid.  

  19. Phototodynamic effects & applications
    M. Sharma, ibid.  

  20. Basic optics
    S. K. Mohanty, ibid.  

  21. Fluorescence spectroscopy for biomedical diagnosis
    P.K.Gupta, ibid  

  22. Laser manipulation of microscopic objects-potential device applications
    P.K.Gupta
    Indo-French workshop on ‘ Molecular and organic devices, May 22-24 (2006).  

  23. Biophotonics - studies at RRCAT
    P.K. Gupta
    Recent advances in fiber optics and photonics, IIT Roorkee, Roorkee, August 25 – 27, 2006.  

  24. Optical coherence Tomography.
    K. Divakar Rao,
    National Laser Symposium Dec. 2006  

  25. Optical Imaging and Diagnosis.
    P.K. Gupta
    Eighth International Conference on Optoelectronics, Fiber Optics and Photonics Photonics 2006, Held at University of Hyderabad, December 13-16, 2006.  

  26. Laser manipulation of microscopic objects
    P.K.Gupta
    International conference on Lasers Electrooptics (ICOL), Dehradun (2005).  

  27. Biophotonics
    P.K.Gupta,
    National Laser Symposium Dec. 2005.

  28. Optical diagnosis and therapy for improved health care.
    P.K. Gupta
    91st Indian Science Congress, January 3-7, 2004.  

  29. Biomedical Optics: An Introduction.
    P K Gupta
    International Conference on Mathematical Biology, IIT Kanpur, 19-21 Feb. 2004.  

  30. Statistical Pattern Recognition for Optical Diagnosis of Cancer.
    S.K. Majumder
    International Conference on Mathematical Biology, IIT Kanpur, 19-21 Feb. 2004.  

  31. 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.  

  32. 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.  

  33. 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.  

  34. 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.  

  35. 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.

  36. Fluorescence based early detection of cancer.
    P K Gupta
    CEP Course on Fluorescence techniques in biological research, INMAS, Delhi, 24-28 February 2003.  

  37. Laser Induced Fluorescence Spectroscopy for Cancer Diagnosis.
    S.K. Majumder
    National Seminar on Recent Trends in Physics, Holkar Science College  Indore.  

  38. Micromanipulations with Lasers.
    S.K. Mohanty
    DAE-BRNS National Laser Symposium 2003, 1-4 December 2003, IIT Kharagpur.

  39. Biomedical applications of lasers.
    P K Gupta
    89th Indian Science Congress, January 3-7, 2002, Lucknow.  

  40. 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.

  41. Biomedical applications of lasers.
    P K Gupta
    University Department of Chemical Technology, University of Mumbai, 2 February 2001.  

  42. Biomedical applications of lasers.
    P K Gupta
    Discussion meeting on biomolecular studies using neutrons and X-rays, 10-11 January, BARC, Mumbai, 2001.  

  43. 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.  

  44. 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.  

  45. Biomedical applications of lasers-Studies at CAT.
    P K Gupta
    National Laser Symposium, LASTEC, Delhi, Dec. 13-15, 2000. 

  46. Laser induced fluorescence spectroscopy for detection and characterization of neoplastic tissue.
    P K Gupta
    Cancer Research Institute, Mumbai, 6 February 1999.  

  47. 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.  

  48. Laser Safety and Laser induced fluorescence spectroscopy for cancer diagnosis.
    P K Gupta
    XVI DAE Safety Professionals meet, CAT, Indore, November 11-13, 1999.

  49. Laser induced fluorescence spectroscopy for cancer diagnosis.
    P K Gupta
    National Laser Symposium, IIT Kanpur, Kanpur, Dec. 14-16, 1998. 

  50. Laser applications in medical diagnosis and photobioactivation.
    P K Gupta
    National Laser Symposium, CAT, Indore, Feb. 6-8, 1997.  

  51. 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.  

  52. Optical parametric oscillators.
    P K Gupta
    Workshop on Non-linear Optics, CAT, Indore, 22-26 July, 1996.  

  53. 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).

  54. Lasers in Medicine.
    P K Gupta
    16th AMPI Annual Conference On Medical Physics, Defence Laboratory, Jodhpur, Nov. 8-11 (1995).

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