When the frequency of the incident light lies around the Braggfrequency of the periodic dielectric, it will not be completely reflected as in the linear case.
频率处于周期介质布拉格频率附近的入射信号光，将不会像在线性周期介质中那样被完全反射。
2
The frequency shifting and beam deflection of the Bragg acoustooptic interaction in cascade is analyzed according to general Bragg acoustooptic interaction theory.