Abstract

Two-wave mixing in photorefractive crystal is the basis of many other photorefractive effects. However, some important fundamental problems, such as the mechanism of intensity-dependent two-wave mixing, have not been studied in detail. In our experiments, two 488-nm beams of an Ar⁺ laser are used, and it is found that intensity-dependent two-wave mixing and the anisotropic-thermal-lens effect occur at the same time. In addition, both of them have something to do with the anisotropic temperature coefficient of the refractive index.

© 1995 Optical Society of America