Source: http://photonics.cusat.edu/Prof.VPN_publications.htm
Timestamp: 2019-04-19 08:27:41+00:00

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2. Chemical sensing with microbent optical fiber. Thomas, Lee S.; George, Nibu A.; Sureshkumar, P.; Radhakrishnan, P.; Vallabhan, C. P. G.; Nampoori, V. P. N.. International School of Photonics, Cochin University of Science and Technology, Cochin, India. Opt. Lett. (2001), 26(20), 1541-1543.
3. A sensitive fibre optic pH sensor using multiple sol-gel coatings. Lee, S. Thomas; Gin, Jose; Nampoori, V. P. N.; Vallabhan, C. P. G.; Unnikrishnan, N. V.; Radhakrishnan, P. International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Opt. A: Pure Appl. Opt. (2001), 3(5), 355-359.
7. Nonlinear absorption and optical limiting in solutions of some rare earth substituted phthalocyanines. Unnikrishnan, K. P.; Thomas, Jayan; Paul, Binoy; Kurian, Achamma; Gopinath, Pramod; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Nonlinear Opt. Phys. Mater. (2001), 10(1), 113-121.
8. Optical absorption and emission spectral studies of phthalocyanine molecules in DMF. Kumar, G. A.; Thomas, J.; Unnikrishnan, N. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. Solid State Electronics Division, International School of Photonics, Cochin University of Science and Technology, Kochi, India. J. Porphyrins Phthalocyanines (2001), 5(5), 456-459.
12. Emission spectral studies of phthalocyanines in borate glass matrix. Kumar, G. A.; Nampoori, V. P. N.; Vallabhan, C. P. G.; Jose, G.; Unnikrishnan, N. V. Solid State Electronics Division, International School of Photonics, Cochin University of Science and Technology, Kochi, India. J. Mater. Sci. Lett. (2000), 19(18), 1669-1672.
13. Spectral studies of naphthalocyanine (Nc) and rare earth phthalocyanine (RePc) molecules in an inorganic glassy borate matrix. Kumar, G. A.; Thomas, J.; George, N.; Nampoori, V. P. N.; Radhakrishnan, P.; Vallabhan, C. P. G.; Unnikrishnan, V. Solid State Electronics Division, International School of Photonics, Cochin University of Science and Technology, Kochi, India. Phys. Chem. Glasses (2000), 41(4), 199-203.
14. NO2 detection with a fiber optic evanescent wave sensor. Mechery, John Shelly; Thomas, Jayan; Unnikrishnan, K. P.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Cochin Univ. of Science and Technology, Cochin, India. Proc. SPIE-Int. Soc. Opt. Eng. (1999), 3897(Advanced Photonic Sensors and Applications), 173-178.
15. Fading of thermoluminescence from CaS and CaS:Ce phosphors. Joseph, James; Ananthakrishnan, T. R.; Nampoori, V. P. N.; Warier, M. K. Rudra. HMT Colony, St. Paul's College, Kalamassery, India. Indian J. Phys., A (2000), 74A(1), 21-24.
16. Optical studies of phthalocyanine molecules in PVA film. Thomas, J.; Kumar, G. A.; Unnikrishnan, N. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Solid State Electronics Division, Cochin University of Science and Technology, Kochi, India. Mater. Lett. (2000), 44(5), 275-278.
19. Experimental investigation of optical limiting and thermal lensing in toluene solutions of C70. Bindhu, C. V.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. Appl. Phys. B: Lasers Opt. (2000), 70(3), 429-434.
20. Photoacoustic investigation of the effect of excess lead oxide on thermal diffusivity of PLZT ceramic. George, N. A.; Paul, T.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.; Sebastian, M. T. International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Mater. Sci. Lett. (2000), 19(6), 499-501.
23. Solvent effect on absolute fluorescence quantum yield of rhodamine 6G determined using transient thermal lens technique. Bindhu, C. V.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. Mod. Phys. Lett. B (1999), 13(16), 563-576.
24. Evaluation of electrical conductivity and thermal diffusivity of vanadyl naphthalocyanine. Thomas, J.; Pillai, V. N. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Mater. Sci. Lett. (1999), 18(12), 963-964.
27. Monitoring the rate of pulsed laser deposition of silver thin films using a fiber optic sensor. John, M. Shelly; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Cochin Univ. of Science and Technology, Cochin, India. Proc. SPIE-Int. Soc. Opt. Eng. (1999), 3666(Photonics India '98), 574-577.
28. Investigation of nonlinear absorption and aggregation in aqueous solutions of rhodamine B using thermal lens technique. Bindhu, C. V.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. Pramana (1999), 52(4), 435-442.
29. Studies of nonlinear absorption and aggregation in aqueous solutions of rhodamine 6G using a transient thermal lens technique. Bindhu, C. V.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Phys. D: Appl. Phys. (1999), 32(4), 407-411.
31. Two and three photon absorption in rhodamine 6G methanol solutions using pulsed thermal lens technique. Bindhu, C. V.; Harilal, S. S.; Kurian, Achamma; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Nonlinear Opt. Phys. Mater. (1998), 7(4), 531-538.
34. Prompt electron emission and collisional ionization of ambient gas during pulsed laser ablation of silver. Issac, R. C.; Varier, G. K.; Gopinath, P.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School Photonics, Cochin University Science Technology, Cochin, India. Appl. Phys. A: Mater. Sci. Process. (1998), A67(5), 557-561.
36. Collective behavior of laser-produced plasma from a multicomponent YBa2Cu3O7 target in air. Issac, R. C.; Varier, G. K.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Div., International School Photonics, Cochin Univ. Sci. Technol., Cochin, India. Appl. Phys. B: Lasers Opt. (1998), B67(5), 647-651.
37. An optical fiber based evanescent wave sensor to monitor the deposition rate of thin films. Jose, Deepa; John, M. Shelly; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Cochin University of Science and Technology, Cochin, India. Thin Solid Films (1998), 325(1,2), 264-267.
39. Twin peak distribution of electron emission profile and impact ionization of ambient molecules during laser ablation of silver target. Issac, Riju C.; Gopinath, Pramod; Varier, Geetha K.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Laser Division, Cochin University of Science & Technology, Cochin, India. Appl. Phys. Lett. (1998), 73(2), 163-165.
40. Induction of mitotic chromosomal aberrations by lasers in comparison to gamma radiations. Pillai, P. R. Unnikrishna; Nambisan, Padma; Nampoori, V. P. N.; Vallabhan, C. P. G. Department of Biotechnology, Cochin University of Science and Technology, Cochin, India. Yichuan (1997), 19(5), 5-9.
41. Use of mirage effect for the detection of phase transitions in liquid crystals. Rajasree, K.; Vidyalal, V.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.; George, A. K. International School of Photonics, Opto-Electronics Laboratory, Cochin University of Science and Technology, Cochin, India. Mater. Lett. (1998), 36(1-4), 76-80).
42. Time evolution of the electron density and temperature in laser-produced plasmas from YBa2Cu3O7. Harilal, S. S.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School Photonics, Cochin University Science Technology, Cochin, India. Appl. Phys. B: Lasers Opt. (1998), B66(5), 633-638.
43. Temporal and spatial behavior of electron density and temperature in a laser-produced plasma from YBa2Cu3O7. Harilal, S. S.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School Photonics, Cochin University Science Technology, Cochin, India. Appl. Spectrosc. (1998), 52(3), 449-455.
44. Dynamics of laser produced silver plasma under film deposition conditions studied using optical emission spectroscopy. Issac, Riju C.; Vasudevan Pillai, K.; Harilal, S. S.; Varier, Geetha K.; Bindhu, C. V.; Gopinath, Pramod; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Laser Division, Cochin University of Science and Technology, Cochin, India. Appl. Surf. Sci. (1998), 125(2), 227-235.
45. Influence of ambient gas on the temperature and density of laser produced carbon plasma. Harilal, S. S.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Laser Division, Cochin University of Science and Technology, Cochin, India. Appl. Phys. Lett. (1998), 72(2), 167-169.
46. Anomalous profile of a self-reversed resonance line from Ba+ in a laser produced plasma from YBa2Cu3O7. Issac, Riju C.; Harilal, S. S.; Bindhu, C. V.; Varier, Geetha K.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. Spectrochim. Acta, Part B (1997), 52B(12), 1791-1799.
48. Spatial analysis of C2 band emission from laser produced plasma. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. Plasma Sources Sci. Technol. (1997), 6(3), 317-322.
49. Time resolved study of CN band emission from plasma generated by laser irradiation of graphite. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Gopinath, Pramod; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. Spectrochim. Acta, Part A (1997), 53A(10), 1527-1536.
50. Electron density and temperature measurements in a laser produced carbon plasma. Harilal, S. S.; Bindhu, C. V.; Issac, Riju C.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Laser Division, Cochin University of Science + Technology, Cochin, India. J. Appl. Phys. (1997), 82(5), 2140-2146.
53. Optical emission studies of C2 species in laser-produced plasma from carbon. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Phys. D: Appl. Phys. (1997), 30(12), 1703-1709.
54. Emission characteristics and dynamics of C2 from laser-produced graphite plasma. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science & Technology, Cochin, India. J. Appl. Phys. (1997), 81(8, Pt. 1), 3637-3643.
55. Photoacoustic signal saturation and optical limiting in C70-toluene solution. Issac, Riju C.; Harilal, S. S.; Varier, Geetha K.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Laser Division, Cochin University of Sciences and Technology, Cochin, India. Opt. Eng. (Bellingham, Wash.) (1997), 36(2), 332-336.
56. Time resolved analysis of C2 emission from laser induced graphite plasma in helium atmosphere. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. Int. Sch. Photonics, Cochin Univ. Sci. Technol., Cochin, India. Jpn. J. Appl. Phys., Part 1 (1997), 36(1A), 134-138.
57. A fiber optic sensor to measure surface tension. Deepthy, A.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Cochin University of Science and Technology, Cochin, India. Indian J. Phys., B (1996), 70B(6), 527-530.
59. Pulsed photoacoustic determination of absolute fluorescent quantum yield of the laser dye rhodamine B. Bindhu, C. V.; Harilal, S. S.; Issac, Riju C.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School Photonics, Cochin Univ. Science & Technology, Cochin, India. Mod. Phys. Lett. B (1996), 10(22), 1103-1110.
60. Study of laser ablation in liquids using pulsed photoacoustic technique. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. International Sch. Photonics, Cochin Univ. Sci. Technol., Cochin, India. Mod. Phys. Lett. B (1996), 10(21), 1053-1057.
61. Temporal and spatial evolution of C2 in laser-induced plasma from graphite target. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School Photonics, Cochin Univ. Science & Technology, Cochin, India. J. Appl. Phys. (1996), 80(6), 3561-3565.
62. Electron density determination of laser induced plasma from polymethyl methacrylate using phaseshift detection techniques. Varier, Geetha K.; Harilal, S. S.; Bindhu, C. V.; Issac, Riju C.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Div., Internat. Sch. Technol., Cochin, India. Mod. Phys. Lett. B (1996), 10(6), 235-239.
63. A study of photoacoustic effects and optical limiting in the solution of C60 in toluene. Issac, Riju C.; Bindhu, C. V.; Harilal, S. S.; Varier, Geetha K.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Div., Cochin Univ. Sci. Technol., Cochin, India. Mod. Phys. Lett. B (1996), 10(1 & 2), 61-67.
64. Photoacoustic studies on multilayer dielectric coatings. Philip, Annieta; Radhakrishnan, P.; Nampoori, V. P.; Vallabhan, C. P. G. International School of Photonics, Cochin University of Science and Technology, Cochin, India. J. Phys. D: Appl. Phys. (1996), 29(5), 1387-1388.
65. Spatial and time resolved analysis of CN bands in the laser induced plasma from graphite. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Varier, Geetha K.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School of Photonics, Cochin University of Science and Technology, Cochin, India. Pramana (1996), 46(2), 145-151.
66. Measurement of the absolute fluorescence quantum yield of rhodamine B solution using a dual-beam thermal lens technique. Bindhu, C. V.; Harilal, S. S.; Varier, Geetha K.; Issac, Riju C.; Nampoori, V. P. N.; Vallabhan, C. P. G. International Sch. Photonics, Cochin Univ. Sci. Technol., Cochin, India. J. Phys. D: Appl. Phys. (1996), 29(4), 1074-9.
67. Measurement of thermal diffusivity of some halogeno benzimidazole complexes of cobalt(II), copper(II) and copper(I) using laser induced photoacoustic effect. Raman, S. Sankara; Nampoori, V. P. N.; Vallabhan, C. P. G.; Saravanan, N.; Yusuff, K. K. Mohammed. International Sch. of Photonics and Dep. of Applied Chemistry, Cochin Univ. of Science and Technology, Kerala, India. J. Mater. Sci. Lett. (1996), 15(3), 230-1.
68. Evanescent wave sensor to monitor the etching rate of an optical fiber. Lovely, M. R.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. International School Photonics, Cochin University Science & Technology, Cochin, India. Indian J. Pure Appl. Phys. (1996), 34(1), 34-5.
69. Effect of Ce3+ ion on the x-ray induced fluorescence emission from CaS. Joseph, James; Ananthakrishnan, T. R.; Nampoori, V. P. N.; Warier, M. K Rudra; Karanjikar, N. P.; Kamat, M. J. Dep. Physics, St. Paul's Coll., Kalamassery, India. Mod. Phys. Lett. B (1995), 9(23), 1507-11.
72. Subcritical Hopf bifurcation in Ne-Nd hollow cathode discharge (Physics Letters A 196 (1994) 191). Sasi Kumar, P. R.; Nampoori, V. P. N.; Vallabhan, C. P. G. Phys. Lett. A (1995), 199(5,6), 416.
73. Observation of multiphoton process in liquid CS2 using pulsed photoacoustic technique. Harilal, S. S.; Issac, Riju C.; Bindhu, C. V.; Varier, Geetha K.; Nampoori, V. P. N.; Vallabhan, C. P. G. School Photonics, Cochin University Science Technology, Cochin, India. Mod. Phys. Lett. B (1995), 9(14), 871-6.
74. Photoemission optogalvanic effect near the instability region of a hollow cathode discharge. Sasi Kumar, P. R.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, International School of Photonics, Cochin University of Science and Technology, Cochin, India. Opt. Commun. (1995), 118(5,6), 525-8.
75. Pulsed photoacoustic technique to study nonlinear processes in liquids: results in toluene. Bindhu, C. V.; Harilal, S. S.; Issac, Riju C.; Varier, Geetha K.; Nampoori, V. P. N.; Vallabhan, C. P. G. Sch. of Photonics, Cochin Univ. of Science and Technology, Cochin, India. Pramana (1995), 44(3), 231-5.
77. Subcritical Hopf bifurcation in Ne-Nd hollow cathode discharge. [Erratum to document cited in CA122:120652]. Sasi Kumar, P. R.; Nampoori, V. P. N.; Vallabhan, C. P. G. Laser Division, Department of Physics, Cochin University of Science and Technology, Cochin, India. Phys. Lett. A (1995), 199(5,6), 416.
78. Application of laser beam deflection technique to study the diffusion process in electrolyte solutions. Kurian, Achamma; Bindhu, C V; Harilal, S S; Issac, Riju C; Nampoori, V P N; Vallabhan, C P G. Department Physics, Catholicate College, Pathanamthitta, India. Pramana (1994), 43(5), 401-6.
79. Detection of phase transitions in liquid crystals using the mirage effect. Rajasree, K.; Vidyalal, V.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.; george, A. K. Phys. Dep., Cochin Univ. Sci. Technol., Kerala, India. Liq. Cryst. (1995), 18(1), 167-9.
80. Observation of two-photon-induced photoemission optogalvanic effect using copper target electrode. Ajithprasad, K. C.; Sasikumar, P. R.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. and Technol., Cochin, India. Mod. Phys. Lett. B (1994), 8(30), 1917-22.
92. Photoacoustic observation of excited singlet state absorption in the laser dye rhodamine 6G. Sathy, P.; Philip, Reiji; Nampoori, V. P. N.; Vallabhan, C. P. G. Department Physics, Cochin University Science Technology, Cochin, India. J. Phys. D: Appl. Phys. (1994), 27(10), 2019-22.
95. Modification of spectral characteristics and optogalvanic response in neon hollow cathode under laser excitation. Kumar, P R Sasi; Nampoori, V P N; Vallabhan, C P G. Laser Division, Department Physics, Cochin University Science and Technology, Cochin, India. Pramana (1994), 42(5), 427-33.
100. Measurement of laser ablation threshold on doped bismuth strontium calcium copper oxide high-temperature superconductors by the pulsed photothermal deflection technique. Rajasree, K.; Vidyalal, V.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Appl. Phys. (1993), 74(3), 2004-7.
101. Determination of the laser-induced damage threshold of bulk polymer samples at 1.06 mm using the pulsed photothermal deflection technique. Rajasree, K.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Meas. Sci. Technol. (1993), 4(5), 591-5.
103. Photoacoustic studies on multilayer dielectric coatings. Philip, Annieta; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Phys. Dep., Cochin Univ. Sci. Technol., Cochin, India. J. Phys. D: Appl. Phys. (1993), 26(5), 836-8.
104. High-resolution, optogalvanic study in nitrogen discharge. Kumar, P. R. Sasi; Ambadi, B.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1993), 40(2), 113-18.
105. Photoemission optogalvanic effect studies in nitrogen, nitrogen dioxide, and argon discharges under pulsed laser excitation. Kumar, P. R. Sasi; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Phys. D: Appl. Phys. (1993), 26(1), 1-3.
106. Spatial and temporal analysis of laser-induced plasma from a polymer sample. Padmaja, G.; Kumar, A. V. Ravi; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Phys. D: Appl. Phys. (1993), 26(1), 35-41.
108. Damage threshold determination of bulk polymer samples using pulsed photothermal deflection technique. Rajasree, K.; Ravikumar, A. V.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Bull. Mater. Sci. (1992), 15(2), 183-8.
110. Evaluation of laser ablation threshold in polymer samples using pulsed photoacoustic technique. Kumar, A. V. Ravi; Padmaja, G.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1991), 37(4), 345-51.
112. A low-inductance, long-life, triggered spark gap switch for Blumlein-driven lasers. Baby, Thomas; Ramachandran, T.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. and Technol., Cochin, India. Meas. Sci. Technol. (1991), 2(9), 873-5.
113. High power nitrogen laser with a modified gas flow system and discharge geometry. Baby, Thomas; Ramachandran, T.; Sathianandan, K.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Rev. Sci. Instrum. (1991), 62(9), 2076-9.
115. Fluorescence quantum yield of Rhodamine 6G using pulsed photoacoustic technique. Sathy, P.; Philip, Reji; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1990), 34(6), 585-90.
119. Optical phase conjugation in dyes embedded in polymer films. Moosad, K. P. B.; Rasheed, T. M. Abdul; Nampoori, V. P. N.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Opt. Eng. (1990), 29(1), 47-51.
121. Spectral features of laser induced plasma from yttrium barium copper oxide (YBa2Cu3O7) and gadolinium barium copper oxide (GdBa2Cu3O7) high Tc superconductors. Padmaja, G.; Kumar, A. V. Ravi; Vidyalal, V.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1989), 32(5), L693-L698.
123. Overtone spectra of styrene and polystyrene in the visible and near infrared regions. Rasheed, T. M. Abdul; Moosad, K. P. B.; Nampoori, V. P. N.; Sathianandan, K. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1989), 33(3), 391-5.
124. Saturable absorbers for low power optical phase conjugation [Erratum to document cited in CA110(4):31088d]. Moosad, K. P. B.; Nampoori, V. P. N.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1988), 31(6), 533.
125. On the luminescence characteristics of cerium and copper doped barium sulfide phosphor. Thomas, Reethamma; Nampoori, V. P. N.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Solid State Commun. (1988), 68(9), 821-4.
126. Saturable absorbers for low power optical phase conjugation. Moosad, K. P. B.; Nampoori, V. P. N.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1988), 31(4), 281-7.
127. Effect of dissolved sodium chloride, magnesium chloride, and sodium sulfate in seawater on the optical attenuation in the region from 430 to 630 nm. Ravisankar, M.; Reghunath, A. T.; Sathianandan, K.; Nampoori, V. P. N.. Phys. Dep., Cochin Univ. Sci. Technol., Cochin, India. Appl. Opt. (1988), 27(18), 3887-94.
128. A study of hydrodynamic turbulence using laser transmission. Reghunath, A. T.; Nampoori, V. P. N.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1987), 29(5), 461-7.
130. Laser-excited fluorescence of neodymium(3+) in some fluoride crystals. Kartha, C. Sudha; Ramachandran, T.; Nampoori, V. P. N.; Sathianandan, K. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Spectrochim. Acta, Part A (1987), 43A(7), 911-5.
131. Near IR spectrum of 2-butanone - a local mode analysis. Rasheed, T. M. Abdul; Nampoori, V. P. N.; Sathianandan, K.Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Spectrochim. Acta, Part A (1987), 43A(7), 925-7.
133. Overtone spectra of 1,2-dichloro- and dibromoethanes in the near infrared region. Rasheed, T. M. Abdul; Nampoori, V. P. N.; Sathianandan, K. Dep. Phys., Cochin Univ. Sci. Technol., Kerala, India. Chem. Phys. (1986), 108(3), 349-56.
134. Fluorescence decay characteristics of the green emission from holmium(3+)-doped calcium fluoride. Kartha, C. Sudha; Ramachandran, T.; Nampoori, V. P. N.; Sathianandan, K. Dep. Phys., Cochin Univ., Cochin, India. Solid State Commun. (1986), 59(7), 461-3.
135. Blue emission of neodymium(3+) ion in calcium difluoride and strontium difluoride. Vijayakumar, Sudha; Nampoori, V. P. N.; Sathianandan, K. Dep. Phys., Cochin Univ., Cochin, India. Proc. Nucl. Phys. Solid State Phys. Symp. (1984), Volume Date 1982, 25C 418-19.
136. Fluorescence of holmium(3+)-doped calcium fluoride under molecular nitrogen laser excitation. Vijayakumar, Sudha; Nampoori, V. P. N.; Sathianandan, K. Dep. Phys., Cochin Univ., Cochin, India. Proc. Nucl. Phys. Solid State Phys. Symp. (1984), Volume Date 1982, 25C 416-17.
137. Excitation and emission characteristics of pressure-pretreated manganese and cerium-activated strontium sulfide phosphors. Lalitha, P. R.; Rao, V. R.; Nampoori, V. P. N.. Dep. Phys., Reg. Coll. Educ., Mysore, India. Curr. Sci. (1980), 49(23), 881-3.
138. A new band system of indium chloride (InCl) molecule in the region 4100-3900 .ANG. Nampoori, V. P. N.; Patel, M. M. Fac. Sci., Maharaja Sayajirao Univ. Baroda, Baroda, India. Curr. Sci. (1979), 48(12), 532.
139. Rotational analysis of the B ® X system of indium monochloride molecule. Nampoori, V. P. N.; Kamalasanan, M. N.; Patel, M. M. Fac. Sci., Maharaja Sayajirao Univ. Baroda, Baroda, India. Indian J. Phys. (1977), 51B(5), 401-3.
141. Rotational analysis of A-X and B-X systems of the indium monobromide molecule. Nampoori, V. P. N.; Patel, M. M.Fac. Sci., Maharaja Sayajirao Univ. Baroda, Baroda, India. Curr. Sci. (1976), 45(10), 369-70.
142. Rotational analysis of the C 1P-X 1S+ system of indium monofluoride. Nampoori, V. P. N.; Kamalasanan, M. N.; Patel, M. M. Fac. Sci., M.S. Univ. Baroda, Baroda, India. J. Phys. B (1975), 8(17), 2841-5.
143. Dynamical aspects of coupled Rossler systems: effects of noise. Pravitha, R.; Indic, P.; Nampoori, V. P. N. Physics Letters A (2002), 294(1), 37-46.
144. Laser induced photoacoustic technique for the detection of phase transitions in liquid crystals. George, Nibu A.; Vallabhan, C. P. G.; Nampoori, V. P. N.; George, A. K.; Radhakrishnan, P. Nondestructive Testing and Evaluation (2001), 17(6), 315-324.
145. Thermal characterization of doped InP using photoacoustic technique. George, Sajan D.; Kurian, Achamma; Lase, Martin; Nampoori, V. P. N.; Vallabhan, C. P. G. Proceedings of SPIE-The International Society for Optical Engineering (2001), 4595(Photonic Systems and Applications), 183-191.
148. NIR to UV absorption spectra and the optical constants of phthalocyanines in glassy medium. G. A. Kumar, Gin Jose, Vinoy Thomas, N. V. Unnikrishnan and V. P. N. Nampoori, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.
151. Microbent Optical Fibers as Evanescent Wave Sensors . S Thomas Lee, K. Geetha, V P N Nampoori, C P G Vallabhan and P Radhakrishnan Optical Engg.
165. Effect of Te doping on the thermal diffusivity of Bi2Se3 crystals – A study using open cell photoacoustic technique. Sajan D George, Saji Augustine, Elizabeth Mathai, P Radhakrishnan, V P N Nampoori and C P G Vallabhan, Physica Status Solidi (a), (2003), 196(2), 384-389.
167. Thermal characterisation of intrinsic and extrinsic InP. Sajan D George, P Radhakrishnan, V P N Nampoori and C P G Vallabhan, Journal of Physics D:Applied Physics, (2003), 36 (8), 990-993.
175. Complexity Quantification of Dense Array EEG using Sample Entropy Analysis, Pravitha Ramanand V P N Nampoori and R Sreenivasan, Journal of Integrative Neuroscience, 3(3), (2004) 343-358.
176. Effect of silver nano particles on the fluorescence quantum yield of Rhodamine 6G determined using dual beam thermal lens method, A Santhi, M Umadevi, V Ramakrishnan, P Radhakrishnan and V P N Nampoori, Spectrochimica Acta Part A: Molecular and Bimolecular Spectroscopy, 60 (5), (2004), 1077-1083.
178. Photoacoustic Investigation on the photostability of Coumarin 540-doped PMMA, Ritty J Nedumpara, Binoy Paul, Santhi A, P Radhakrishnan, V P N Nampoori, Spectrochimica Acta Part A-60, (2004) ,435-439.
179. Nanosecond optical limiting response of sandwich-type neodymium dyphthalocyanine in a co-polymer host, B Aneeshkumar, Pramod Gopinath, Jayan Thomas, C P G Vallabhan, V P N Nampoori and P Radhakrishnan, Synthetic Metals, 143, (2004), 197.
180. Photoacoustic investigations on intrinsic and extrinsic InP, Sajan D George, B Aneeshkumar, P Radhakrishnan, V P N Nampoori and C P G Vallabhan, Optical Engineering, 43 (12), (2004), 3114.
181. Photoacoustic investigations on intrinsic and extrinsic Si, Sajan D George, B Aneeshkumar, P Radhakrishnan, V P N Nampoori and C P G Vallabhan, Optical Engineering (2004), ( in press).
182. Photoacoustic spectrum of samarium phthalocyanine powder, Nibu A George, R Jyotsna, S Thomas Lee, B Aneeshkumar, J Thomas, V P N Nampoori and P Radhakrishnan, Optical Materials (in press).
183. Thermal lens technique to evaluate the fluorescence quantum yield of Schiff base, A Santhi, U L Kala, R J Nedumpara, A Kurian, M R P Kurup, P Radhakrishnan and V P N Nampoori, Applied Physics B, (2004) 1-5.
185. Line narrowing effects and enhanced back scattering from ZnO colloids, Bindu Krishnan and V P N Nampoori, J. Material Science, (in press).
186. Photoacoustic study on the photostability of polymethyl methacrylate films doped with Rodhamine 6G – Rhodamine B dye mixture system, Annieta Philip, Lyjo K Joseph, Litty Mathew Irimpan, P Radhakrishnan and V P N Nampoori, Journal of physics: D Applied Physics, 38, (2005), 2904.
187. Study on the determination of molecular distance in organic dye mixtures using dual beam thermal lens, Achamma Kurian, Sajan D George, V P N Nampoori, C P G Vallabhan, Spectrochimica Acta part A, 61, (2005), 2799.
188. Screen printed nanosized ZnO thick film, Bindu Krishnan and V.P.N Nampoori, Bulletin of Material Science, (in press).
189. Spectral dependence of third order nonlinear optical susceptibility of zinc phthalocyanine, A Santhi, Vinu V Namboodiri, P Radhakrishnan and V P N Nampoori, Journal of Applied Physics, 100, 053109 (2006).
190. Simultaneous determination of nonlinear optical and thermo-optic parameters of liquid samples, A Santhi, V N Vinu, P Radhakrishnan and V P N Nampoori, Applied Physics Letters, 89, 1 (2006).
191. Laser emission from transversely pumped dye-doped free standing polymer film, K Geetha, M Rajesh, V P N Nampoori, C P G Vallabhan and P Radhakrishnan, Journal of optics A: Pure and Applied optics, 8, (2006) 189-193.
192. Propagation characteristics and wavelength tuning of amplified spontaneous emission from dye-doped polymer, K Geetha, M Rajesh, V P N Nampoori, C P G Vallabhan and P Radhakrishnan, Applied Optics, Vol.45, No.4, 1 Feb 2006.
193. Backscattering from nano-sized ZnO suspensions , Bindu Krishnan, A. Deepthy Litty Irimpan, Dann.V.J, V.P.N Nampoori, Physica E 35 (2006) 23-26.
194. A fiber optic smart sensor for studying the setting characteristics of various grades of cement, M Rajesh, K Geetha, M Sheeba, P Radhakrishnan , C P G Vallabhan and V P N Nampoori, Optics and Lasers in Engineering, Volume 44, Issue 5, May 2006, Pages 486-493.
195. Characterization of Rhodamine 6G doped polymer optical fiber by side illumination fluorescence, M Rajesh, K Geetha, M Sheeba, , C P G Vallabhan, P Radhakrishnan and V P N Nampoori, Optical Engineering, 45(7) 075003, July 2006.
196. Design and fabrication of dye-doped polymer optical fiber for optical amplification, M Rajesh, M Sheeba, K Geetha, C P G Vallabhan, P Radhakrishnan and V P N Nampoori, SPIE Proceedings: Symposium on Optics & Photonics, August 2006, San Diego, California USA.
197. Fabrication and characterization of dye doped optical fiber as a light amplifier, Mandanparambil Rajesh, Mavila Sheeba, Karinjamanna Geetha, Chakkalakkal P. G. Vallabhan, Padmanabhan Radhakrishnan, and Vadakkedathu P. N. Nampoori, Applied Optics, Vol. 46, No.1, 1 January 2007.
199. Laser induced fluorescence based optical fiber probe for analyzing bacteria, P. M. Sandeep, S W B Rajeev, M Sheeba, S G Bhat and V P N Nampoori, Laser Physics Letters, 1-5 (2007).
200. Light amplification in dye doped polymer films, Ritty J.Nedumpara, Geetha K, Dann V. J, V P N Nampoori, C.P.G.Vallabhan and P Radhakrishnan, J. of Opt.A:Pure and Appl.Opt.9 (2007) 7-14.
202. Light amplification in dye doped polymer films, Ritty J.Nedumpara, Geetha K, Dann V. J, V P N Nampoori, C.P.G.Vallabhan and P Radhakrishnan, J. of Opt.A:Pure and Appl.Opt.9 (2007) 7-14.
203. Fabrication and characterization of dye doped optical fiber as a light amplifier, Mandanparambil Rajesh, Mavila Sheeba, Karinjamanna Geetha, Chakkalakkal P. G. Vallabhan, Padmanabhan Radhakrishnan, and Vadakkedathu P. N. Nampoori, Applied Optics, Vol. 46, No.1, 1 January 2007.
204. Spectoscopic Characterisation of Laser Induced Plasma from Titanium Dioxide. V J Dann , Manoj V Mathew, V P N Nampoori , C P G Vallabhan, V M Nandakumaran, P Radhakrishnan, Plasma Science and Technology, Vol 9, No 4, August 2007.
205. Excitation wavelength dependent fluorescence behaviour of nano colloids of ZnO, Litty Irimpan, Bindu Krishnan, A Deepthy, V P N Nampoori and P Radhakrishnan, J. Phys. D: Appl. Phys. 40(18) 5670-5674(2007).
206. Size dependent fluorescence spectroscopy of nanocolloids of ZnO, Litty Irimpan, A Deepthy, Bindu Krishnan, V P N Nampoori and P Radhakrishnan, J.Appl. Phys. 102, 063524 (2007).
207. Photoacoustic Thermal Characterisation of Porous Rare-Earth Phosphate Ceramics, Sajan D George, Rajesh Komban, K G K Warrier, P Radhakrishnan, V P N Nampoori and C P G Vallabhan, International Journal of Thermophysics, Vol. 28, No. 1 (2007).
208.Photoacoustic studies on thermal parameters of liquid crystal mixtures, Sajan D George, A K George, P Radhakrishnan, V P N Nampoori and C P G Vallabhan, Smart Mater Struct. 16, 1298-1301 (2007).
209. Photoacoustic Thermal Characterisation of Porous Rare-Earth Phosphate Ceramics, Sajan D George, Rajesh Komban, K G K Warrier, P Radhakrishnan, V P N Nampoori and C P G Vallabhan, International Journal of Thermophysics, Vol. 28, No. 1 (2007).
210.A comparative study of energy transfer in dye mixtures in monomer and polymer matrices under pulsed laser excitation, M Kailasnath, P R John, P Radhakrishnan V P N Nampoori and C P G Vallabhan, Journal of Photochemistry and Photobiology A:Chemistry, (2007).
211. A Comparative Study of Fiber Optic Humidity Sensors Based on Chitosan and Agarose, Jinesh Mathew, K. J. Thomas, V. P. N. Nampoori and P. Radhakrishnan, Sensors & Transducers Journal, Vol.84, Issue 10, October 2007, pp. 1633-1640.
212.Multimode laser emission from dye doped polymer optical fiber, M. Sheeba, K.J. Thomas, M. Rajesh, V.P.N. Nampoori, C.P.G. Vallabhan, P.Radhakrishnan, Applied Optics, Vol 46, 8089- 8094, 2007.
213. Study of solvent effect in laser emission from Coumarin 540 dye solution, Ritty J. Nedumpara, Thomas K. J., Jayasree V. K., C.P. Girijavallabhan, V.P.N. Nampoori, P. Radhakrishnan, Applied Optics 2007.
214.Size dependent enhancement of nonlinear optical properties in nano colloids of ZnO, Litty Irimpan, Bindu Krishnan, A. Deepthy, V.P.N Nampoori and P. Radhakrishnan, Journal of applied physics, 103, 033105 (2008).
215.Effect of self assembly on the nonlinear optical characteristics of ZnO thin films, Litty Irimpan, A. Deepthy, Bindu Krishnan, L.M. Kukreja, V.P.N. Nampoori and P. Radhakrishnan , Optics Communications Vol 281 , 15 may 2008, pages 2938- 2943.
216. Spectral and nonlinear optical characteristics of nanocomposites of ZnO–Ag, Litty Irimpan, V.P.N. Nampoori and P. Radhakrishnan, Chemical Physics Letters Vol 445, 10 april 2008 ,pp 265-269.
217.Spectral and nonlinear optical characteristics of nanocomposites of ZnO–CdS, Litty Irimpan, V.P.N. Nampoori and P. Radhakrishnan, J. Appl. Phys. 103, 094914 (2008); DOI:10.1063/1.2919109.
218. Nonlinear optical characteristics of self-assembled films of ZnO, Litty Irimpan, A. Deepthy, Bindu Krishnan, V.P.N. Nampoori and P. Radhakrishnan, Applied Physics B: Lasers and Optics Volume 90, Numbers 3-4 / March, 2008 pp547-556.
219.Fabrication and characterization of dye mixture doped polymer optical fiber as a broad wavelength optical amplifier, M. Sheeba, M. Rajesh, V. P. N. Nampoori, and P. Radhakrishnan, Applied Optics, Vol. 47, Issue 11, 2008, pp. 1907-1912.
220. Raman spectra of polymethyl methacrylate optical fibers excited by a 532 nm diode pumped solid state laser, K J Thomas, M Sheeba, VPN Nampoori, CPG Vallabhan and P Radhakrishnan, Journal of Optics A: Pure and Applied Optics, Vol 10, 2008 pp 055303.
221.Photoluminescence studies on rare earth titanates prepared by self propagating high temperature synthesis method, Lyjo K Joseph, K R Dayas, Bindu Krishnan, Soniya Damodar, K Krishnankutty, V P N Nampoori and P Radhakrishnan, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, DOI information: 10.1016/j.saa.2008.03.030.
226.Thermal characterization of methylene blue intercalated montmorillonites by photoacoustic technique, Lyjo K Joseph, H Suja, G Sanjay, S Sugunan, V P N Nampoori and P Radhakrishnan, doi:10.1016/j.clay.2008.06.006.
228.Fluorescence characterization and gain studies on a dye-doped graded index polymer optical-fiber preform, M Kailasnath, T S Sreejaya, Rajesh Kumar, C P G Vallabhan, V P N Nampoori and P Radhakrishnan, Optics & Laser Technology, Volume 40, Issue 5, July 2008, Pages 687-691.
229. Nonlinear optical characteristics of nanocomposites of ZnO-TiO2-SiO2, Litty Irimpan, Bindu Krishnan, V P N Nampoori and P Radhakrishnan, Optical Materials, Volume 31, Issue 2, October-December 2008, Pages 361-365.
230.Enhanced luminescence and nonlinear optical properties of nanocomposites of ZnO-Cu, Litty Irimpan, V P N Nampoori and P Radhakrishnan, Journal of Materials Research, Volume 23, Issue 11, Novemeber 2008, pp 2836-2845.
231. Visible luminescence mechanism in nano ZnO under weak confinement regime, Litty Irimpan, V P N Nampoori and P Radhakrishnan, Journal of Applied Physics, Volume 104, December 2008, Page 113112.
232.Fast imaging of laser blow off plume: lateral confinement in ambient environment, Sony George, Ajai Kumar, R.K.Singh, V.P.N.Nampoori, APPLIED PHYSICS LETTERS 94, 141501 (2009) .
233. Effect of ambient gas on the expansion dynamics of plasma plume formed by laser blow off of thin film, Sony George, Ajai Kumar, R.K.Singh, V.P.N.Nampoori, Applied Physics A, 1432-0630 (2009).
234.Thermal characterization of methylene blue intercalatedmontmorillonites by photoacoustic technique, Lyjo K. Joseph, H. Suja, G. Sanjay, S. Sugunan, V.P.N. Nampoori , P. Radhakrishnana,Applied Clay Science 42 (2009) 483–487 .
235. Thermal characterisation of dye-intercalated K-10 montmorillonite ceramics using photoacoustic technique, L. K. Joseph ; G. Sanjay ; H. Suja ; S. Sugunan ; V. P. N. Nampoori ; P. Radhakrishnan, Philosophical Magazine Vol. 89, No. 10, 1 April 2009, 895–905.
236.Kinetics of bacterial colony growth by laser induced fluorescence, B. Nithyaja, V. K. Jisha,R. Tintu, A.V. Saramma and V. P. N. Nampoori, Laser Physics, 2009, Vol. 19, No. 3, pp.468-472.
237. Selective mode excitation in the dye –doped DNA polyvinyl alcohol thin film, Nithyaja Balan, Misha Hari, Vadakkedathu Parameswaran Narayana Namppori, Appl. Opt. 48 3521-3525(2009).
239. Identification of spectral lines of elements using artificial neural networks, , M. Saritha, and V.P.N. Nampoori, Microchemical Journal, Vol.91, Issue 2, 2009, pp. 170-175.
240.Thermal diffusivity of rhodamine 6G incorporated in silver nanofluid measured using mode-matched thermal lens technique, Santhi Ani Joseph, Misha Hari, S. Mathew, Gaurav Sharma, Soumya, V.M. Hadiya, P. Radhakrishnan, V.P.N. Nampoori, Optic. Comms; 283(2010) 313–317.
241. Thermal diffusivity of rhodamine 6G incorporated in silver nanofluid measured using mode-matched thermal lens technique, Santhi Ani Joseph, Misha Hari, S. Mathew, Gaurav Sharma, Soumya, V.M. Hadiya, P. Radhakrishnan, V.P.N. Nampoori, Optic. Comms; 283(2010) 313–317.
242.Laser induced Bessel beams can realize fast all-optical switch in gold nanosol prepared by pulsed laser ablation, Santhi Ani Joseph, Gaurav Sharma, Misha Hari, S. Mathew, P. Radhakrishnan, V. P .N. Nampoori, JOSA B (in press 2010) .
243. LIQUID LEVEL SENSOR USING ETCHED SILICA FIBER, J. Linesh, K. Sudeesh, P. Radhakrishnan,and V. P. N. Nampoori, Microwave Opt. Technol. Lett., 52, 883,2010.
244. Matagels thin film based magnetostictive transducers for use in long period grating sensors, Sony Thomas,Jinesh Mathew, Anantharaman,V. P .N. Nampoori, P. Radhakrishnan,Sensors and Actuaters-A,2010.
245.Spectral and Nonlinear optical Characteristics of ZnO Nanocomposites, Litty irimpan, V. P .N. Nampoori and P. Radhakrishnan,Science Of Advaced Materials,Vol.2, 117-137,2010.

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