Optical surface waves at the interface between a linear dielectric and a photorefractive crystal

The propagation of a laser beam near the interface between a linear dielectric and a photorefractive crystal is considered. The specific features of formation of surface waves are studied, the profiles of such surface modes are numerically calculated, and guiding properties of the interface are analysed. Using the method of effective particles, the second-order ordinary differential equation describing the trajectory of a beam reflecting from the interface is obtained and analysed. (nonlinear optical phenomena)