Source: http://photonics.cusat.edu/Prof.CPG_publications.htm
Timestamp: 2019-04-19 08:18:07+00:00

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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.
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.
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.
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.
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.
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.
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.
102. 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.
103. 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.
104. Effect of a fluorescing impurity on the characteristics of stimulated Raman scattering from acetone. Sathy, P.; Philip, Reji; Nampoori, V. P. N.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1992), 38(6), 673-9.
105. Electrical conductivity, dielectric properties and phase transition in ethylenediammonium sulfate single crystals. Santhakumari, N. C.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Phys. Chem. Solids (1992), 53(5), 697-701.
106. 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.
107. Characteristics of two-photon absorption in methanol solutions of Rhodamine 6G using laser-induced pulsed photoacoustics. Philip, Reji; Sathy, P.; Nampoori, V. P. N.; Philip, Jacob; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Phys. B: At., Mol. Opt. Phys. (1992), 25(1), 155-61.
109. 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.
110. 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.
111. Observation of two-photon induced photoemission optogalvanic effect. Kumar, P. R. Sasi; Padmaja, G.; Kumar, A. V. Ravi; Nampoori, V. P. N.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1991), 36(4), 423-7.
112. Effects of insulating layer on the performance of thin film electroluminescent devices. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Bull. Mater. Sci. (1991), 14(1), 49-55.
113. A.C. thin film electroluminescent devices with rare earth doped zinc sulfide. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Electrochem. Soc. (1991), 138(5), 1512-16.
114. Dielectric properties of electron-beam-evaporated samarium oxide films. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Thin Solid Films (1991), 197(1-2), 15-19.
116. Low-voltage driven zinc sulfide:manganese MIS and MISIM thin-film electroluminescent devices with europium oxide (Eu2O3) insulator layer. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Phys. D: Appl. Phys. (1990), 23(12), 1706-10.
117. 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.
118. Observation of two-photon absorption in Rhodamine 6G using photoacoustic technique. Sathy, P.; Philip, Reji; Nampoori, V. P. N.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Opt. Commun. (1990), 74(5), 313-17.
119. Dielectric and optical properties of europium oxide films. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Thin Solid Films (1989), 177 59-67.
120. Photoacoustic detection of two photon absorption in formaldehyde using pulsed dye laser. Kumar, A. V. Ravi; Padmaja, G.; Nampoori, V. P. N.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Pramana (1989), 33(5), L621-L626.
121. The a.c. conductivity in europium oxide thin films. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. PHys., Cochin Univ. Sci. Technol., Cochin, India. Phys. Status Solidi A (1989), 115(1), K63-K65.
122. Low voltage driven white light emitting thin film electroluminescent device. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. and Technol., Cochin, India. Phys. Status Solidi A (1989), 114(2), K233-K236.
123. Observation of energy transfer from copper and silver centers to rare earth ions in copper-, silver-, and rare earth-doped zinc sulfide (ZnS:(Cu/Ag), RE) electroluminescent phosphors. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Indian J. Phys., A (1989), 63A(5), 480-6.
124. 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.
125. Time evolution of neodymium:YAG laser-induced plasma from gadolinium barium copper oxide (GdBa2Cu3O7) 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. J. Phys. D: Appl. Phys. (1989), 22(10), 1558-61.
126. Electrical conductivity, dielectric constant and phase transitions in pure and doped diammonium hydrogen phosphate. Kumar, R. Navil; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Phys.: Condens. Matter (1989), 1(35), 6095-103.
127. A study of the white electroluminescence in copper, praseodymium, chlorine-doped zinc sulfide phosphors. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Phys. D: Appl. Phys. (1989), 22(9), 1380-3.
128. Effect of deuteration on the electrical conductivity, dielectric constant, and phase transition in triammonium hydrogen disulfate. Kumar, Navil; Vallabhan, C. P. G.. Cochin Univ. Sci. Technol., Cochin, India. Phys. Status Solidi A (1989), 112(2), K113-K117.
129. Ionic thermocurrent study of lead(2+)-doped sodium chlorate crystals. Kumar, R. Navil; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. J. Mater. Sci. Lett. (1989), 8(4), 453-5.
130. The a.c. electroluminescent thin film devices with dysprosium- and chlorine-activated zinc sulfide and praseodymium- and chlorine-activated zinc sulfide phosphors. Jayaraj, M. K.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ. Sci. Technol., Cochin, India. Bull. Electrochem. (1989), 5(4), 284-7.
131. A study on the electroluminescence spectrum of samarium- and dysprosium-doped calcium sulfide. Pillai, S. M.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Phys. Status Solidi B (1986), 134(1), 383-90.
132. Preparation of a highly efficient cerium-activated calcium sulfide electroluminescent phosphor and its emission characteristics. Pillai, S. M.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Bull. Electrochem. (1985), 1(5), 503-5.
133. Laser-induced damage study of polyacrylonitrile films. Radhakrishnan, P.; Sathianandan, K.; Vallabhan, C. P. G.. Cochin Coll., Cochin, India. Bull. Electrochem. (1985), 1(3), 319-20.
134. Electroluminescence and nitrogen laser excited fluorescence of high field electroformed castor oil and liquid paraffin. Pillai, S. M.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Pramana (1985), 24(4), 601-10.
135. Effect of deuteration on the newly found high-temperature phase transition in ADP. Subhadra, V. K.; Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Proc. Nucl. Phys. Solid State Phys. Symp. (1984), Volume Date 1982, 25C 61-2.
136. Spectral characteristics of electroluminescence in copper-, samarium- and chlorine-activated zinc sulfide and copper-, dysprosium- and chlorine-activated zinc sulfide phosphors. Pillai, S. M.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Proc. Nucl. Phys. Solid State Phys. Symp. (1984), Volume Date 1982, 25C 422-3.
137. Observation of protonic thermo-current. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Proc. Nucl. Phys. Solid State Phys. Symp. (1984), Volume Date 1982, 25C 359-61.
138. A study of the electroluminescence spectrum of erbium-doped calcium sulfide phosphor and the energy level splitting in erbium(3+) ions. Pillai, S. M.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. J. Phys. C (1984), 17(11), 2019-25.
140. Phase modulation of microwave signals using point contact germanium signal diodes. Mohanan, P.; Vallabhan, C. P. G.; Aanandan, C. K.; Nair, K. G. Dep. Phys., Univ. Cochin, Cochin, India. Indian J. Radio Space Phys. (1984), 13(1), 32-3.
141. Effect of chlorine concentration on the spectral characteristics of electroluminescence in copper- and chlorine-doped zinc sulfide phosphor. Pillai, S. M.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Solid State Commun. (1983), 47(11), 909-11.
142. High-temperature phase transitions in pure and deuterated ammonium dihydrogen phosphate: conductivity and dielectric measurements. Subhadra, V. K.; Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. J. Appl. Phys. (1983), 54(5), 2593-6.
143. Ionic thermocurrent studies in lithium ammonium sulfate. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Phys. Rev. B: Condens. Matter (1982), 26(10), 5941-9.
144. Protonic conduction in lithium ammonium sulfate. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Proc. Nucl. Phys. Solid State Phys. Symp. (1982), Volume Date 1981, 24 C 593-4.
145. Phase transitions in deuterated lithium ammonium sulfate (LiND4SO4). Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Proc. Nucl. Phys. Solid State Phys. Symp. (1982), Volume Date 1981, 24 C 337-8.
146. Effect of deuteration on the electrical conductivity, dielectric constant and phase transitions in lithium ammonium sulfate. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Phys. Lett. A (1982), 89A(1), 37-40.
147. Low-temperature electrical conductivity, dielectric constant, and phase transitions in ammonium sulfate and ammonium-d4 sulfate. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. Solid State Commun. (1982), 41(2), 169-72.
148. Observation of a high-temperature phase transition in ammonium sulfate from dielectric studies. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Univ. Cochin, Cochin, India. J. Phys. C (1981), 14(29), L865-L868.
149. DC electrical conductivity and phase transitions in triammonium hydrogen disulfate. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ., Cochin, India. J. Phys. C (1981), 14(20), L571-L574.
150. Detection of ferroelectric phase transitions in lithium ammonium sulfate by electrical conductivity studies. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ., Cochin, India. Natl. Acad. Sci. Lett. (India) (1980), 3(12), 364-6.
151. Electrical conductivity and thermally stimulated current in the paraelectric phase of ammonium sulfate. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ., Cochin, India. Solid State Commun. (1981), 38(6), 555-9.
152. D.C. electrical conductivity in lithium ammonium sulfate. Syamaprasad, U.; Vallabhan, C. P. G.. Dep. Phys., Cochin Univ., Cochin, India. Solid State Commun. (1980), 34(11), 899-403.
153. 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.
154. 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.
155. Photoacoustic studies on n-type InP. Nibu A. George, C. P. G. Vallabhan, V. P. N. Nampoori, and P. Radhakrishnan, Optical Engineering ,(2002) ,41(1), 251-254.
158. 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.
164. Effect of pH on quantum yield of fluorescein using thermal lens technique. Achamma Kurian, Nibu A George, Sajan D George, K P Unnikrishnan, Binoy Paul, Pramod Gopinath, V P N Nampoori and C P G Vallabhan, Journal of Optics, (2002), 31(1), 29-36.
172. 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.
174. 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.
181. 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.
182. 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.
183. 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).
184. 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.
185. 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.
186. 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.
187. 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.
188. 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.
189. 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.
190. 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.
191. 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.

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