Observation of Stochastic Resonance Induced by Dichotomous Noise in a Liquid Crystal Light Valve with Optical Feedback

Noise-induced phenomena are widely observed in nature and are of great interest in the field of nonlinear dynamics. Stochastic resonance (SR), which is one of the most well-known noise-induced phenomena, has been discussed intensively [1], [2]. SR is a phenomenon in which the response of a nonlinear bistable system to a weak signal is enhanced by the addition of noise. In the present study, we focus on a liquid crystal light valve (LCLV) with optical feedback as one of the bistable systems. In the LCLV with optical feedback, the average orientation of the LC molecules, so-called director, shows bistability in some conditions [3], [4]. In this report, we discuss SR in LCLV with optical feedback system induced by the dichotomous noise (DN), characterized by an autocorrelation time.

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