<title>Volume holographic storage in photorefractives: material peculiarities and memory performances</title>

Abstract

In this paper we review the currently achievable performances of holographic memories stored in photorefractive crystals. We discuss the dependence of the memory performances on the material peculiarities in three major aspects: storage capacity, data transfer rate,and image fidelity. In the recent years the research at Beijing Polytechnic University on the photorefractive holographic storage has been focused to the optimization of the storage capacity and diffraction efficiency, as well as the influence of noises on the fidelity of reconstructed images. Our research shows again that the realization of volume holographic storage technology requests materials with perfect properties.