Nonlinear image filtering with liquid crystal spatial light modulator (review of recent results)

Abstract

Nonlinear spatial filtering can be realised based on some optical effects in light modulating media such as photorefractive, electrooptic or optically non-linear effects. In this report we review the results of our approach to apply the liquid crystal optically addressed spatial light modulators (LCSLM) to spatial filtering. We discuss the properties and features of the optical schemes, where LC SLM is implemented either on the Fourier plane or on the image plane, where it acts as a non-linear filter.