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截断光束在非Kolmogorov湍流中的扩展区域

Spreading Regions of Truncated Beams in Non-Kolmogorov Turbulence

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摘要

为研究截断光束在非Kolmogorov湍流中的扩展区域, 求解了湍流距离及瑞利区间解析式, 将传输路径划分为三个区域, 并对三段区域进行相关数值分析。研究结果表明, 第一区域和第二区域长度随相干参数、截断参数的增大而缩短, 第三区域起点随相干参数、截断参数的增大而减小; 相干参数、截断参数越小, 忽略湍流在瑞利区间内对光束扩展影响的可能性则更大; 三个区域内, 湍流距离随广义指数的变化依次加剧。对主要结果进行了相应的物理解释。

Abstract

To study the regions of spreading of truncated beams propagating through non-Kolmogorov turbulence, the expressions for turbulence distance and Rayleigh range are derived, the transport path is divided into three regions, and the relevant numerical analysis of the three regions is given. Results show that the lengths of the first region and the second region decreases with increase of coherence and truncation parameter, and the starting point of the third region reduces with increase of coherence and truncation parameter. The smaller coherence and truncation parameter are, the more likely it is to ignore the effect of turbulence on the beam propagation in Rayleigh range. In the three regions, the turbulent distance increases with the change of the generalized exponential. The corresponding physical explanations are given for the main results.

Newport宣传-MKS新实验室计划
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中图分类号:O436;TN012

DOI:10.3788/lop56.010102

所属栏目:大气光学与海洋光学

基金项目:四川省教育厅资助项目(17ZB0163)、川北医学院校级科研发展计划项目(CBY17-A-YB03)、教育部留学回国人员科研启动基金资助项目(教外司[2010]1174号)

收稿日期:2018-06-08

修改稿日期:2018-06-26

网络出版日期:2018-07-18

作者单位    点击查看

陈晓文:川北医学院医学影像学院, 四川 南充 637000
李宾中:川北医学院基础医学院物理教研室, 四川 南充 637000
汤明玥:川北医学院基础医学院物理教研室, 四川 南充 637000
邓涵凌:川北医学院基础医学院物理教研室, 四川 南充 637000

联系人作者:邓涵凌(56833804@qq.com)

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引用该论文

Chen Xiaowen,Li Binzhong,Tang Mingyue,Deng Hanling. Spreading Regions of Truncated Beams in Non-Kolmogorov Turbulence[J]. Laser & Optoelectronics Progress, 2019, 56(1): 010102

陈晓文,李宾中,汤明玥,邓涵凌. 截断光束在非Kolmogorov湍流中的扩展区域[J]. 激光与光电子学进展, 2019, 56(1): 010102

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