三阶光学非线性声光布喇格衍射

3rdorder Optically Nonlinear Acoustooptic Bragg Diffraction

应用耦合波理论研究具有三阶光学非线性的晶体的声光布喇格衍射性质．指出强光场作用下声光布喇格衍射效率将在很大程度上依赖于入射光束强度，并预言了大角度反向布喇格衍射的光学双稳性质．

The properties of acoustooptic Bragg diffraction in the presence of 3rdorder optical nonlinearity were studied by using CoupledWave theory.It is shown that nonlinear diffractive efficiency will largely depend on the intensity of input beam.Furthermore,optical bistability was predicted in the case of largeangle contradirectionalcoupling Bragg diffraction.