The result supplements the property of the flat surface grating differaction, and provides with theoratical basis to adjust,design, develop, and test the spatial structure of grating.

• 这一特性,补充完善了平面光栅衍射性质,同时,也为通过调整光栅空间结构,设计、研制、测试非线性光栅提供了理论依据。