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Third-order optical nonlinearities and optical limiting properties of triarylmethane dye in liquid and solid media
, A. Ramalingam
Published in
Pages: 685 - 686
The nonlinear optical response of thermo-optic origin exhibited by Pararosanilin dye at low continuous wave laser powers was studied and optical limiter action based on nonlinear refraction is demonstrated in liquid and solid media. The nonlinear refractive index was determined using the Z scan technique. The origin of the nonlinearity appears to be predominantly thermo-optic. The variation in the output intensity was studied as a function of input intensity for two different aperture sizes, different concentrations, different sample positions and in liquid & solid media and the influence of the aperture size, concentration, sample position and medium on the threshold limit was analyzed. © 2009 IEEE.
About the journal
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS