Influence of light intensity on crossed-beam photorefractive gratings in doubly doped LiNbO3 crystals

In this paper, the theory model in which both the two-center material equations and two-dimensional two-wave coupled equations were solved jointly based on two-center holographic recording method is presented to analysis the dynamic formation of the crossed-beam photorefractive gratings in two doped LiNbO3 crystals. The influence of the light intensity on the basic holographic properties of the crossed-beam photorefractive gratings in LiNbO3:Fe:Mn crystals is explored. The numerical simulation results are presented. The investigation yields quantitative predictions of the expected behavior of the dynamics of these gratings, which can be useful for the design of finite boundary photorefractive holographic optical elements.