Phase stability of the photoconductive polysiloxane-based photorefractive composites

This article discusses the phase stability of the photoconductive poly silo xane-based photorefractive composites as studied by the light-scattering me thod. The photorefractive properties of the composites were studied by the two-beam coupling technique. The effects of the electric field on the photo refractive property of the composites were investigated as well. The phase stability was found to be dependent on the chromophore concentration and st orage temperature. The two-beam coupling gain coefficient of the composites increased with increasing electric field and chromophore content.