Multiphoton absorption studies in aqueous solutions of rhodamine 6G laser dye using transient thermal lens technique

C. V. Bindhu; S. S. Harilal; V. Bindu; V. P. N. Nampoori; C. P. G. Vallabhan

doi:10.1117/12.346802

29 April 1999 Multiphoton absorption studies in aqueous solutions of rhodamine 6G laser dye using transient thermal lens technique

C. V. Bindhu, S. S. Harilal, V. Bindu, V. P. N. Nampoori, C. P. G. Vallabhan

Author Affiliations +

Proceedings Volume 3729, Selected Papers from International Conference on Optics and Optoelectronics '98; (1999) https://doi.org/10.1117/12.346802
Event: Selected Papers from the International Conference on Optics and Optoelectronics, 1998, Dehradun, India

Abstract

Dual beam transient thermal lens studies were carried out in aqueous solutions of rhodamine 6G using 532 nm pulses from a frequency doubled Nd:YAG laser. Analysis of thermal lens signal shows the existence of different nonlinear processes like two photon absorption and three photon absorption phenomena along with one photon absorption as well as excited state absorption. Concentration of the dye in the solution has been found to influence the occurrence of the different processes in a significant way.

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C. V. Bindhu, S. S. Harilal, V. Bindu, V. P. N. Nampoori, and C. P. G. Vallabhan "Multiphoton absorption studies in aqueous solutions of rhodamine 6G laser dye using transient thermal lens technique", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); https://doi.org/10.1117/12.346802

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