Phase modulated two-wave mixing in crystals with long photocarrier lifetimes

The temporal frequency response is derived for phase modulation in two-wave mixing for photorefractive crystals with long charge photocarrier lifetimes. Theoretical analysis shows that when the photorefractive response time is comparable with the photocarrier lifetime, the effects of the latter on the frequency transfer function must be considered. The present analysis is applied for Bi12SiO20-type photoreafractive crystals.4361185119