The Fast Hankel transformation algorithm has been used in studying the diffraction modulation porperity of laser beam propagation in high power laser facility in this paper.

• 本文利用快速汉克尔变换算法研究了高功率激光束在自空间传输过程中形成低频调制对光束质量的影响；指出了衍射调制深度跟光束宽度及传输距离等参数之间的变化关系.