衍射图形的新型光阑设计和再现实验

Design and experiment of new diaphragm to get expected diffraction patterns

用蒙特卡洛和贪心两者结合混合算法,根据光阑和入射光束波长设计出相应的光阑求解出衍射图案.在菲涅耳衍射的情形下,对目标图案设计了动态实验仿真窗口,通过加入蒙特卡洛退火元素的混合算法对目标图案进行反演计算,得到光阑编码图像,用扩束准直光路系统实验验证了设计正确性.

According to the diaphragm and the wavelength of the incoming light beam,the corresponding apertures were designed to solve the diffraction pattern using a combination of Monte Carlo and greed algorithm.In the regime of Fresnel diffraction,a dynamic simulation window to the target pattern was designed.By joining a blend of elements of the Monte Carlo annealing algorithm,the target pattern was inversely calculated.The coded image of diaphragm was obtained,and the accuracy with the expanded beam collimation light path system was verified by the experiments.