用MATLAB模拟正弦光栅的衍射

Simulating Diffraction of Sine Grating by MATLAB

基于光学理论的抽象性,利用Matlab模拟了正弦光栅的衍射实验,得出正弦光栅和黑白光栅衍射的区别在于孔径的透射率,且正弦光栅的1级衍射亮纹及零级明纹的距离与光栅频率、传输距离、入射光波长成正比,和光栅参数无关的结论,为进一步拓展正弦光栅的应用提供了理论基础。

In accordance with the abstractness of optical theory, the diffraction experiment of a sine grating is simulated by using the Matlab and a conclusion that the difference between a sine grating and a black and white grating in diffraction is the transmittance of the aperture and the distance of one step and zero step bright lines of the sine grating is proportional to the grating frequency, transfer distance and the wavelength of the incident light and is independent of the grating parameters is derived. This provides the theoretical basis for the further widening of the application of the sine gratings.