Continuous reconstruction of holographic interferograms through anisotropic diffraction in photorefractive crystals

Abstract

A new technique is presented for a continuous reconstruction of volume holograms in cubic photorefractive crystals of the sillenite family using the effect of anisotropic diffraction. In the scheme suggested, only two waves (the reference and object beams) are needed for simultaneous recording and reconstruction of holograms. The major advantage of the technique is an automatic self-adjustment of the Bragg diffraction at the volume hologram. This simple and efficient scheme can be used for producing holographic interferograms of objects of arbitrary shapes in real time. The experimental results are presented both for Bi 12SiO 20 and Bi 12TiO 20 crystals.