Home I People I Faculty I Prof. C. P. Girijavallabhan I Publications 
 
Last modified: August. 01, 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.    Optics Letters  (2001),  26(20),  1541-1543. 
3. A sensitive fiber 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.    Journal of Physics: Condensed 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. 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. 
16. 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. 

17. 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. 
18. 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. 
19. 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. 
20. 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. 
21. 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.  
22. 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. 
23. Photoacoustic study on photobleaching of Rhodamine 6G doped in poly(methyl methacrylate).     George, Nibu A.; Aneeshkumar, B.; Radhakrishnan, P.; Vallabhan, C. P. G..    International School of Photonics,  Cochin University of Science and Technology,  Cochin,  India.    J. Phys. D: Appl. Phys.  (1999),  32(14),  1745-1749. 
24. 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. 
25. 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. 
26. 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. 
27. 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. 
28. 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. 
29. 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. 
30. 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. 
31. 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.  
32. 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 
33. 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. 
34. 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. 
35. 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. 
36. 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. 
37. 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. 
38. 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
39. 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. 
40. 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. 
41. 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. 
42. 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.
43. 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.
44. 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
45. 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. 
46. 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. 
47. 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. 
48. 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. 
49. 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. 
50. 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. 
51. 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. 
52. 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. 
53. 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. 
54. 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. 
55. 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. 
56. Characterization of potassium doped GdBa2Cu3O7-d using Raman spectroscopy and x-ray diffraction. [Erratum to document cited in CA124:329709].     Thomas, Preethi Cicily; Manoj, Jumar K.; Nayar, V. Unnikrishnan; Vidyalal, V.; Vallabhan, C. P. G..    Dep. Optoelectron.,  Univ. Kerala,  Trivandrum,  India.    Mod. Phys. Lett. B  (1996),  10(23),  1159. 
57. 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. 
58. 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. 
59. 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. 
60. 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. 
61. Measurements of electromagnetic shielding effect using HTSC materials.     Vidyalal, V.; Rajasree, K.; Vallabhan, C. P. G..Opto-Electronic Lab.,  Cochin Univ. of Sci. and Technology,  Cochin,  India.    Mod. Phys. Lett. B  (1996),  10(7),  293-297. 

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. Characterization of potassium-doped GdBa2Cu3O7-d using Raman spectroscopy and x-ray diffraction.     Thomas, Preethi Cicily; Manoj, Kumar K.; Nayar, V. Unnikrishnan; Vidyalal, V.; Vallabhan, C. P. G..    Dep. Optoelectron.,  Univ. Kerala,  Trivandrum,  India.    Mod. Phys. Lett. B  (1995),  9(26 & 27),  1739-52.
67. 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. 
68. 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. 
69. Electrical conductivity and thermal diffusivity of zinc naphthalocyanine.     Thomas, J.; Pillai, V. N. Sivasankara; Xavier, E.; Vallabhan, C. P. G..    Sch. Photonics,  Cochin Univ. Sci. Technol.,  Cochin,  India.    J. Mater. Sci. Lett.  (1996),  15(2),  151-2. 
70. 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. 
71. 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. 
72. 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
73. CW-Ar+ laser induced structural and optical properties of amorphous Sb2Se3 films.     Jayakumar, S.; Balasubramanian, C.; Narayandass, Sa. K.; Mangalaraj, D.; Vallabhan, C. P. Girija.    Department Physics,  PSG College Technology,  Coimbatore,  India.    Mater. Res. Bull.  (1995),  30(9),  1141-51. 

74. 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.
75. 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. 
76. 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. 
77. 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. 
78. 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. 
79. 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. 
80. 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. 
81. 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. 
82. 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. 
83. 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. 
84. 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. 
85. 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. 
86. 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. 
87. Characterization of transparent conducting cadmium oxide films deposited by spray pyrolysis.     Gurumurugan, K.; Mangalaraj, D.; Narayandass, Sa K.; Sekar, K.; Vallabhan, C. P. Girija.    Thin Film Laboratory,  Department of Physics,  Coimbatore,  India.    Semicond. Sci. Technol.  (1994),  9(10),  1827-32. 
88. 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. 
89. 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. 
90. Thin film electroluminescent devices.     Vallabhan, C. P. G.; Jayaraj, M. K.    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,     389-97.  Publisher: Nova Sci. Publ.,  Commack, N. Y 
91. 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.  CODEN: APPLAB  ISSN: 0003-6951.  Journal  written in English.    CAN 121:120588    AN 1994:520588    CAPLUS   (Copyright 2001 ACS) 
92. Electrical and magnetic measurements in potassium-doped gadolinium barium copper oxide (GdBa2Cu3O7-d) high-temperature superconductors.     Vidyalal, V.; Rajasree, K.; Vallabhan, C. P. G.; Thomas, Preethi Cicily; Nayar, V. Unnikrishnan.    Dep. Phys.,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Int. J. Mod. Phys. B  (1993),  7(18),  3273-9. 
93. 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. 
94. An inexpensive precision constant current source of resistivity measurements in high temperature superconductors.  Vidyalal, V.; Vallabhan, C. P. G..    Sci. Instrum. Cent.,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Int. J. Electron.  (1993),  75(2),  341-4. 
95. 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. 
96. 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. 
97. 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. 
98. 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. 
99. 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. 
100. 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. 
101. Influence of synthesizing routes on resistivity and aging characteristics of bismuth cuprate superconductors. Vidyalal, V.; Rajasree, K.; Vallabhan, C. P. G..    Dep. Phys.,  Cochin Univ. Sci. Technol.,  Cochin,  India.    Mod. Phys. Lett. B  (1992),  6(24),  1535-40.&