OBSERVATION OF STOCHASTIC RESONANCE USING AN OPTICALLY ADDRESSED AMORPHOUS SILICON FERROELECTRIC LIQUID CRYSTAL SPATIAL LIGHT MODULATOR

摘要

The phenomenon of stochastic resonance is predicted and experimentally verified using an amorphous silicon/ferroelectric liquid crystal optically addressed spatial light modulator. We exploit the bistability of aligned ferroelectric liquid crystal for use as the nonlinear element with the noise induced switching intensity set by an optical beam. Readout of the bistable system is also optical. Our measurements show the characteristic improvement in the output signal-to-noise ratio with increasing input noise intensity and the results agree qualitatively with both computer simulations and the predictions of a standard theory of stochastic resonance. [References: 15]