Home I People I Faculty I Prof. V. P. N. Nampoori I Publications 
 
Last modified: July 31, 2007                                                                                               (recent publications-see below)
1. Fiber optic pH sensor with dye-doped multilayer sol-gel coatings.     Lee, Thomas S.; Jose, Gin; Manju, C. M.; Joseph, Betty; John, M. Shelly; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.; Unnikrishnan, N. V.    International School of Photonics,  Cochin University of Science and Technology,  Cochin,  India.    Proc. SPIE-Int. Soc. Opt. Eng.  (2001),  4417(Photonics 2000),  546-554. 
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. 
4. Influence of laser irradiance and helium ambient on the expansion of laser-produced carbon plasma.     Harilal, S. S.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Institut fur Experimentalphysik V,  Ruhr Universitat Bochum,  Bochum,  Germany.    Proc. SPIE-Int. Soc. Opt. Eng.  (2001),  4424(Laser Interaction with Matter),  520-523
5. Use of an open photoacoustic cell for the thermal characterisation of liquid crystals.     George, N. A.; Vallabhan, C. P. G.; Nampoori, V. P. N.; George, A. K.; Radhakrishnan, P.    International School of Photonics,  Cochin University of Science and Technology,  Cochin,  India.    Appl. Phys. B: Lasers Opt.  (2001),  73(2),  145-149
6. Open-cell photoacoustic investigation of the thermal effusivity of liquid crystals.     George, Nibu A.; Vallabhan, C. P. G.; Nampoori, V. P. N.; George, A. K.; Radhakrishnan, P.    International School of Photonics,  Cochin University of Science and Technology,  Cochin,  India.    Opt. Eng. (Bellingham, WA, U. S.)  (2001),  40(7),  1343-1347
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. 
9. Optical properties of phthalocyanine molecules in cyano acrylate polymer matrix.     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.    Mater. Res. Bull.  (2001),  36(1-2),  1-8
10. Photoacoustic evaluation of the thermal effusivity in the isotropic phase of certain comb-shaped polymers.     George, Nibu A.; Vallabhan, C. P. G.; Nampoori, V. P. N.; George, A. K.; Radhakrishnan, P.    International School of Photonics,  Cochin University of Science and Technology,  Cochin,  India.    J. Phys.: Condens. Matter  (2001),  13(3),  365-371
11. Use of photoacoustic effect for the detection of phase transitions in liquid crystal mixtures.     George, Nibu A.; Vallabhan, C. P. G.; Nampoori, V. P. N.; George, A. K.; Radhakrishnan, P.    International School of Photonics,  Cochin University of Science and Technology,  Cochin,  India.    J. Phys. D: Appl. Phys.  (2000),  33(24),  3228-3232
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.
17. Physical and optical properties of phthalocyanine doped inorganic glasses.     Kumar, G. A.; Thomas, J.; George, N.; Unnikrishnan, N. V.; Radhakrishnan, P.; 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. Mater. Sci.  (2000),  35(10),  2539-2542
18. Optical absorption studies of free (H2Pc) and rare earth (RePc) phthalocyanine doped borate glasses.     Kumar, G. A.; Thomas, J.; George, N.; Kumar, B. A.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.; Unnikrishnan, N. V.    Solid State Electronics Division, International School of Photonics,  Cochin University of Science and Technology,  Kochi,  India.    Phys. Chem. Glasses  (2000),  41(2),  89-93
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. 
21. Thermal diffusivity of some polymer supported halogeno benzimidazole complexes of cobalt(II) and copper(II) - a photoacoustic study.  Raman, S. Sankara; Nampoori, V. P. N.; Vallabhan, C. P. G.; Saravanan, N.; Yusuff, K. K. Mohammed.    International School of Photonics,  Cochin University of Science and Technology,  Cochin,  India.    J. Mater. Sci. Lett.  (1999),  18(23),  1887-1889
22. Significance of time scales in nonlinear dynamical analysis of electroencephalogram signals.     Indic P; Pratap R; Nampoori V P; Pradhan N    Department of Electronics, Cochin University of Science and Technology, Kerala, India      INTERNATIONAL JOURNAL OF NEUROSCIENCE  (1999 Aug),  99(1-4),  181-94
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. 
25. Optical limiting and thermal lensing studies in C60.     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.    J. Appl. Phys.  (1999),  86(3),  1388-1392
26. Multiphoton absorption studies in aqueous solutions of rhodamine 6G laser dye using transient thermal lens technique.     Bindhu, C. V.; Harilal, S. S.; Bindu, V.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Int. School of Photonics, Laser Div.,  Cochin Univ. of Science and Technology,  Cochin,  India.    Proc. SPIE-Int. Soc. Opt. Eng.  (1999),  3729(International Conference on Optics and Optoelectronics '98),  312-317
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. 
30. A fiber optic evanescent wave sensor for monitoring the rate of pulsed laser deposition of metal thin films.     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.    Meas. Sci. Technol.  (1999),  10(2),  n17-n20
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. 
32. Photoacoustic study of the effect of hydroxyl ion on thermal diffusivity of g alumina.     Sankara Raman, S.; Nampoori, V. P. N.; Vallabhan, C. P. G.; Ambadas, G.; Sugunan, S.    International School of Photonics,  Cochin University of Science and Technology,  Cochin, Kerala,  India.    J. Appl. Phys.  (1999),  85(3),  1987-1988
33. Photoemission optogalvanic effect: theory and applications.     Prasad, K. C. Ajith; Nampoori, V. P. N.; Sasikumar, P. R.; Vallabhan, C. P. G. Laser Division, International School of Photonics,  Cochin University of Science and Technology,  Cochin,India.  Editor(s): Roy, A. P.    Spectrosc., [Int. Conf.]  (1997),  Meeting Date 1996,     251-256.  Publisher: Narosa,  New Delhi, India 
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. 
35. Thermal diffusivity measurements in organic liquids using transient thermal lens calorimetry.     Bindhu, C. V.; Harilal, S. S.; Nampoori, V. P. N.; Vallabhan, C. P. G.    International School of Photonics Laser Division,  Cochin University of Science and Technology,  Cochin,  India.    Opt. Eng. (Bellingham, Wash.)  (1998),  37(10),  2791-2794
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.
38. Invariant characterization of neural systems.     Pratap R; Nampoori V P; Varghese L    Department of Physics, Cochin University of Science and Technology, India      INTERNATIONAL JOURNAL OF NEUROSCIENCE  (1988 Apr),  39(3-4),  245-51
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. 
47. Fine structure in the time of flight distribution of C2 in laser produced plasma from graphite.     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.    Pramana  (1997),  49(3),  317-322
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. 
51. Possibility of waveguide formation on organic nonlinear crystal methyl para-hydroxy benzoate using high energy ion irradiation.     Sreeramana Aithal, P.; Nagaraja, H. S.; Mohan Rao, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.; Avasthi, D. K.  Department of Electronics, NSAM College,  Nitte-574 110,  India.    Nucl. Instrum. Methods Phys. Res., Sect. B  (1997),  129(2),  217-220
52. Investigations on nanosecond laser produced plasma in air from the multi-component material YBa2Cu3O7.  Varier, Geetha K.; Isaac, Riju C.; Harilal, S. S.; Bindhu, C. V.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Laser Div., International Sch. Photonics,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Spectrochim. Acta, Part B  (1997),  52B(5),  657-666
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. 
58. Photoemission optogalvanic studies with copper as target electrode.     Ajithprasad, K. C.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Laser Division, School of Photonics, Cochin University of Science and Technology,  Cochin,  India.    Appl. Surf. Sci.  (1996),  103(4),  465-470
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. 
70. Laser induced thermal lens effect in rhodamine B - signature of resonant two photon absorption.     Bindhu, C. V.; Harilal, S. S.; Issac, Riju C.; Varier, Geetha K.; Nampoori, V. P. N.; Vallabhan, C. P. G.    International School Photonics,  Cochin University Science Technology,  Cochin,  India.    Mod. Phys. Lett. B  (1995),  9(22),  1471-7
71. Photoacoustic study of the effect of degassing temperature on thermal diffusivity of hydroxyl loaded alumina.  Raman, S. Sankara; Nampoori, V. P. N.; Vallabhan, C. P. G.; Ambadas, G.; Sugunan, S.    International School of Photonics,  Cochin University of Science and Technology,  Kerala,  India.    Appl. Phys. Lett.  (1995),  67(20),  2939-41
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.
76. Anomalous variation of thermal lens signal with concentration from Rhodamine B in methanol solution.     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),  225-9
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. 
90. Subcritical Hopf bifurcation in neon-neodymium hollow cathode discharge.     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  (1994),  196(3,4),  191-4
91. The photoemission optogalvanic effect in a Ne-Nd hollow cathode.     Sasi Kumar, P. R.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Dep. of Physics,  Cochin Univ. of Sciences and Technology,  Cochin,  India.    J. Phys. D:  Appl. Phys.  (1994),  27(12),  2526-30
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. 
93. Monitoring the photobleaching of cresyl violet in polyvinyl alcohol using the photoacoustic effect.     Philip, Annieta; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Physics Department,  Cochin University Science and Technology,  Cochin,  India.    Opt. Eng. (Bellingham, Wash.)  (1994),  33(6),  1962-3
94.High resolution optogalvanic spectrum of N2-rotational structure of (11, 7) band in the first positive system.     Kumar, P R Sasi; Harilal, S S; Nampoori, V P N; Vallabhan, C P G.    Depa. Phys.,  Cochin Univ. Sci. Technolo.,  Cochin,  India.    Pramana  (1994),  42(3),  231-7
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. 
96. CH local mode overtone excitations in benzyl chloride - a conformational study.     Rasheed, T M A; Nampoori, V P N.    Dep. Phys.,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Pramana  (1994),  42(3),  245-50
97. Fluorescence emission from BaS:(Sm, Pr) phosphor system under N2 laser excitation.     Thomas, Reethamma; Nampoori, V. P. N..    Dep. Phys.,  Cochin Univ. Sci. and Technol.,  Cochin,  India.  Editor(s): Rao, R. P.    Lumin.:  Phenom., Mater., Devices, [CECRI Res. Conf.], 3rd  (1992),  Meeting Date 1990,     193-6.  Publisher: Nova Sci. Publ.,  Commack, N. Y
98. Temporal and spatial evolution of laser ablated plasma from YBa2Cu3O7.     Harilal, S. S.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Dep. Phys.,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Appl. Phys. Lett.  (1994),  64(25),  3377-9
99. Fiber optic sensor based on evanescent wave absorption.     Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G. Dep. Phys.,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Opt. Eng. (Bellingham, Wash.)  (1993),  032(04),  692-4
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. 
102. Pulsed photoacoustic technique for the measurement of laser damage threshold in bulk polymers.     Kumar, A. V. R.; Padmaja, G.; Radhakrishnan, P.; Nampoori, V. P. N.; Vallabhan, C. P. G.    Dep. Phys.,  Cochin Univ. Sci. Technol.,  Kochi,  India  Springer Ser. Opt. Sci.  (1992),  69(Photoacoust. Phototherm. Phenom. III),  489-91
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. 
109. Fluorescence emission of europium(2+)-doped strontium sulfide (SrS) phosphor-energy level splitting of europium(2+).  Baby, Thomas; Nampoori, V. P. N..    Dep. Phys.,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Solid State Commun.  (1992),  81(4),  367-9
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. 
111. Characteristics of laser-induced plasma from high-Tc superconductor.     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.    Bull. Mater. Sci.  (1991),  14(3),  545-9
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.,