sinusoidal phase grating

The proposed theory is derived from the theory of Fourier optics,and the capillary wave acts as a sinusoidal reflection phase grating for the laser beam.

利用傅立叶光学讨论斜入射情况下毛细波的激光衍射,毛细波为正弦型位相反射光栅,给出了毛细波激光衍射的光强理论分布。

Two-dimensional(2D) sine phase grating of special design is a perfectly combining element.

相干并束是获得高功率激光束的一种有效方法,特殊设计的二维正弦相位光栅是一种较好的并束元件。