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Conferences > PMED > 1990 > E > E6

Optical Bistability of a Nematic Liquid Crystal with Photorefractively Amplified Feedback

M. Ingold, K. Totland, G. Pauliat, P. Günter, and M. Schadt

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Abstract

Light induced changes of the refractive index in a nematic liquid crystal [1] and in a photorefractive crystal (KNbO3) [2] have been used to design an optically bistable device [3]. In the nematic liquid crystal (NLC) light can reorient biréfringent molecules. Therefore the NLC, placed between crossed polarizers, acts as an optically controlled gate. In the KNbO3 crystal photorefractive two-beam coupling is used for light amplification.

© 1990 Optical Society of America

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