5 October 1995 Transient third-order optical nonlinearity of organic molecules
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Abstract
Transient third-order nonlinearity is induced by electronic resonances of excited molecules. Intensity of a signal, which is generated due to transient nonlinear susceptibility, strongly depends on a relaxation pathway and rate of high excited molecular electronic states, and on molecular dynamics in a low-lying excited state. Experimental and theoretical data, concerning a transient susceptibility dependence on dynamics of excited polyatomic organic molecules (ultrafast dephasing and depopulation processes, orientation anisotropy, time-dependence of transient absorption spectrum), are discussed. Obtained results demonstrate a high sensitivity of transient third order susceptibility to dynamics of excited molecules.
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Valery L. Bogdanov, Valery L. Bogdanov, Alexander G. Spiro, Alexander G. Spiro, } "Transient third-order optical nonlinearity of organic molecules", Proc. SPIE 2527, Nonlinear Optical Properties of Organic Materials VIII, (5 October 1995); doi: 10.1117/12.222799; https://doi.org/10.1117/12.222799
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