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厄米ˉ高斯光束通过湍流大气的传输特性

, PP. 207-210

Keywords: 厄米ˉ高斯(HˉG)光束,湍流大气,传输特性

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Abstract:

基于广义惠更斯ˉ菲涅耳原理,推导出了厄米ˉ高斯(HˉG)光束的三维光强在湍流大气中的传输方程,研究了HˉG光束在湍流大气中的传输特性,并与HˉG光束在自由空间中的传输特性进行了比较.研究表明,HˉG光束在自由空间传输会保持HˉG光束的特征,但是HˉG光束在湍流大气中传输其光强要经历3个阶段的变化,最终成为类高斯分布.湍流的增强会使得HˉG光束传输经历3个阶段的进程加快,湍流导致HˉG光束扩展和最大峰值光强下降.但是,光束阶数越高的HˉG光束受到的湍流的影响越小.

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