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偏心椭圆空心光束通过有光阑的分数傅里叶变换系统的传输特性

, PP. 500-504

Keywords: 分数傅里叶变换(FRFT),偏心椭圆空心光束,光阑,偏心参数

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Abstract:

利用硬边光阑函数可以展开成有限级次的复高斯函数叠加和Collins积分公式,导出了偏心可控制的椭圆空心光束通过有光阑的分数傅里叶变换系统后的光场分布近似表达式,并利用该表达式对偏心椭圆空心光束在分数傅里叶变换面上的光强分布规律作数值计算和分析.研究表明分数傅里叶变换面上归一化的光强分布由分数傅里叶变换的阶数p,截断参数u\,v以及相对偏心参数|dx|\,|dy|共同决定.

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