Abstract

Recently there has been considerable current interest in studies of photorefractive materials. It is mainly due to ample prospects of their applications in the wave-front conjugation, optical data processing, laser-emission control, optical amplification of images, adaptive holographic interferometry and so on. However write an erase times in these materials, typically miliseconds to seconds under continuous wave illumination, are slower required for many applications. For this reason, investigations of such well-known photorefractive substances as BaTiO₃,Bi₁₂TiO₂₀ and Bi₁₂GeO₂₀ have been extended to the case of pulse pumping in the nanosecond and picosecond ranges. The obtained results indicated that the photorefractive effect can be observed in the nanosecond range as well, though the corresponding efficiency is lower than that achieved under continuous wave pumping.

© 1990 Optical Society of America