Browsing by Author "Sajan George, D"

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Browsing by Author "Sajan George, D"

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Studies on Two-Photon Absorption of Aniline Using Thermal Lens Effect

Achamma, Kurian; Thomas Lee, S; Unnikrishnan, K P; Sajan George, D; Nampoori, V P N; Vallabhan, C P G (World Scientific, 2003)

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Abstract:	Two-photon absorption spectrum of aniline is recorded using thermal lens effect with optical parametric oscillator as the pump source. Studies show that the two-photon absorption spectrum observed corresponds to I Al -. I B2 transition of aniline.
URI:	http://dyuthi.cusat.ac.in/purl/2471

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Thermal lens spectrum of organic dyes using optical parametric oscillator

Achamma, Kurian; Unnikrishnan, K P; Sajan George, D; Pramod, Gopinath; Nampoori, V P N; Vallabhan, C P G (Elsevier, 2003)

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Abstract:

The wavelength dependence of thermal lens signal from organic dyes are studied using dual beam thermal lens technique. It is found that the profile of thermal lens spectrum widely differ from the conventional absorption spectrum in the case of rhodamine B unlike in the case of crystal violet. This is explained on the basis of varying contribution of nonradiative relaxations from the excited vibronic levels.

URI:

http://dyuthi.cusat.ac.in/purl/2413