Abstract

Over the past several years a new field of interest has emerged in coherent optics : non linear optical phase conjugation. That field includes the possibility of performing operation in real time on the phase and amplitude of optical wavefronts. The use of such non linear interactions has resulted in numerous new applications such as adaptive optics, image transmission and amplification and non linear spectroscopy. The lecture will review the basic properties of phase conjugate mirrors and the applications of wave mixing experiments in photorefractive crystals to : optical processing, dynamic holography, interferometry, and phase conjugation.

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