Optical bistability in PbSnTe at 10 microns

A nonlinear Fabry-Perot interferometer at low temperature has been studied, providing the first experimental evidence of nonlinear refraction and optical hysteresis in Pb(1-x)Sn(x)Te. In the experimental setup, samples were excited by cw CO2 laser radiation. The results indicate that optical bistabi...

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Published inOptics communications Vol. 65; pp. 133 - 136
Main Authors Paskov, P P, Pavlov, L I, Atanasov, P A, KUSHEV, D B, Zheleva, N N
Format Journal Article
LanguageEnglish
Published 15.01.1988
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Summary:A nonlinear Fabry-Perot interferometer at low temperature has been studied, providing the first experimental evidence of nonlinear refraction and optical hysteresis in Pb(1-x)Sn(x)Te. In the experimental setup, samples were excited by cw CO2 laser radiation. The results indicate that optical bistability in lead chalcogenides is possible using continuous wave excitation. It is noted that optimization of the parameters of the Fabry- Perot etalon may result in a significant decrease in the switching threshold. Possible mechanisms for the observed nonlinear refraction in the sample due to thermal effects or to free carrier generation are considered. (R.R.)
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ISSN:0030-4018