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部分相干平顶光束通过大气湍流的传输特性

Keywords: 平顶光束,传输,大气湍流,交叉谱密度,相干度

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Abstract:

基于广义惠更斯菲涅尔理论和矩阵光学方法研究部分相干平顶光束在大气湍流中的传输特性.得到部分相干平顶光束交叉谱密度函数的矩阵解析表达式,通过分析交叉谱密度强度和相干度的变化得到部分相干平顶光对湍流的敏感性与距离传输、阶数的关系,可以看到低阶及远距离传输后的光束敏感性较低,而光束的光源阶数、自身相干特性和传输距离对其相干度的变化影响由于湍流的存在而变小.

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