23 July 1993 Optical non-linearity of the incommensurate phase of Sn2P2(SexS1-x)6
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Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 19839P (1993) https://doi.org/10.1117/12.2308768
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary
Abstract
We performed the light induced grating spectroscopy(LIGS) and the degenerate four wave mix- ing(DFWM) in BiI3 microcluster at 488nm region, and have found that the nonlinearty caused by thermal grating effect dominates the nonlinearty caused by electronic effect in this region. We have further investigated intensity dependence of thermal grating signal of polarization spectroscopy and the optical amplification of the signal due to electronic susceptibility was observed. 1. THERMAL GRATING SIGNAL When two intense light beam with angle 0 incident on absorbing liquid medium, it induces tem- perature fluctuation by irradiation. The spatially modulated temperature distribution produces a proportional decrease in the index of refraction by the expansion of heated zone, and makes phase grating. In the long time limit, the acoustic mode spread and wipe out at all medium, we can simply use the thermal diffusion equation.
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V. G. Furtsev, V. G. Furtsev, } "Optical non-linearity of the incommensurate phase of Sn2P2(SexS1-x)6", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 19839P (23 July 1993); doi: 10.1117/12.2308768; https://doi.org/10.1117/12.2308768
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