设计二元（0-pi）型Damman光栅产生特定拓扑核的涡旋光-Design two yuan (0-pi) Damman grating to produce the particular topology Optical vortex core

主要是基于matlab，对涡旋光的计算，并对相位进行提取，同时成像。-Mainly based on matlab, the calculation of the vortex of light, and phase extraction, while imaging.

该代码用于处理光经过透镜做的傅里叶变换，利用对数极坐标的方法来分离涡旋光(The code is used to deal with the Fourier transform of light through the lens, and the method of logarithmic polar coordinates is used to separate the vortex optical rotation.)