Stochastic resonance in a nonequilibrium electron-hole plasma |
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Authors: | V. V. Osipov E. V. Ponizovskaya |
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Affiliation: | (1) Science Center of the Russian Federation, Scientific and Industrial Association “ORION”, 111123 Moscow, Russia |
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Abstract: | A photogenerated electron-hole plasma, heated in the process of Auger recombination, is studied. It is shown that in the plasma near the threshold for the appearance of uniform relaxational self-excited oscillations, weak noise transforms into a stochastic sequence of large-amplitude spikes. An additional optical periodic signal with amplitude approximately five times smaller than the noise variance, depending on the form of this signal, transforms these stochastic oscillations into low-amplitude quasiharmonic oscillations or into periodic spike self-excited oscillations of enormous amplitude. Pis’ma Zh. éksp. Teor. Fiz. 70, No. 7, 422–427 (10 October 1999) |
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