Phase transformations of light beams in photorefractive crystals of bismuth silicate

Abstract

This paper presents experimental results on phase transformations of light beams in photorefractive crystrals of bismuth silicate. During the first experiment recording and reconstruction of singular dynamic holograms, recorded by means of singular beams (optical vortices), has been realized. The characteristics of a diffracted singular beams have been determined using an original interference method of the topological charge monitoring. During the second experiment the phase conjugation has been realized by the four-wave mixing method; the possibilities for compensation of phase distortions have been demonstrated.