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高斯-贝塞耳光束在湍流大气中的传输特性

DOI: 10.11830/ISSN.1000-5013.2008.03.0347

Keywords: 高斯-贝塞耳光束, 广义惠更斯-菲涅耳原理, 湍流大气, 传输特性

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Abstract:

根据广义惠更斯-菲涅耳原理,推导高斯-贝塞耳光束在湍流大气中传输时光强分布变化规律的理论公式.研究高斯-贝塞耳光束在湍流大气中的传输特性,讨论湍流扰动强弱及拓扑荷数大小对其传输特性的影响.研究结果表明,湍流扰动强弱及拓扑荷数的大小都会影响光束的传输特性.当拓扑荷数相同时,湍流扰动越强,则光强分布变化越快; 当湍流扰动相同时,光强分布变化速度随拓扑荷数的增大而减小.

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