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采用遗传算法设计了一个8台阶二元光学元件,可用菲涅耳变换系统将高斯光束变换成均匀圆光束,均匀区能量转换效率达到87％,输出波形比较理想。将遗传算法设计的结果同稳相法和输入输出法设计的结果进行比较,发现在同时降低量化台阶数和增大最细线条宽度的条件下,用遗传算法进行设计并制作出的激光束整形元件仍可以得到满意的变换结果。Genetic algorithm is used to design a binary optical system with 8 grey levels to implement the wavefront transformation from gaussian beam to circularly flat - top beam. The comparison with the staionary phase method and the input - output method shows that genetic algorithm is more appropriate to design binary optics for profile reshaping than the other two methods.
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中国物理学会期刊
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