中文说明：
GS算法可以生成相位屏，该算法有着编程简单，收敛速度快，衍射效率高，能将高斯光转换成高阶高斯光，一阶空心高斯光，贝塞尔高斯光。
English Description：
GS algorithm can generate phase screen, the algorithm has a simple programming, high diffraction efficiency, fast convergence and can convert gaussian light into higher order gaussian light, first-order hollow gaussian light, Bessel gaussian light.