Abstract

Bi₁₂SiO₂₀ (BSO) is a promising photorefractive material on account of its high speed¹. But its rather small electro-optic coefficient was thought to preclude its use in holography and multiwave coupling amplification. Several researchers have proposed methods to improve its photorefraction, Miteva² gave a detailed consideration of the influence of a number of factors such as beam intensity, preliminary illumination, external electric field. Refregier et al. and Dugin et al increased the photoretractive effect with moving grating and difference-frequency beams.^3,4 In this paper we report the increased holographic recording characteristics and energy transfer in two-wave mixing in doped BSO crystals.

© 1993 Optical Society of America