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Polarization changes of partially-coherent Airy-Gaussian beams in a slanted turbulent atmosphere

CHENG Ke LU Gang ZHU Bo-yuan SHU Ling-yun

程科, 卢刚, 朱博源, 舒凌云. 斜程湍流大气中部分相干艾里光束的偏振特性研究[J]. 中国光学(中英文), 2021, 14(2): 409-417. doi: 10.37188/CO.2020-0095
引用本文: 程科, 卢刚, 朱博源, 舒凌云. 斜程湍流大气中部分相干艾里光束的偏振特性研究[J]. 中国光学(中英文), 2021, 14(2): 409-417. doi: 10.37188/CO.2020-0095
CHENG Ke, LU Gang, ZHU Bo-yuan, SHU Ling-yun. Polarization changes of partially-coherent Airy-Gaussian beams in a slanted turbulent atmosphere[J]. Chinese Optics, 2021, 14(2): 409-417. doi: 10.37188/CO.2020-0095
Citation: CHENG Ke, LU Gang, ZHU Bo-yuan, SHU Ling-yun. Polarization changes of partially-coherent Airy-Gaussian beams in a slanted turbulent atmosphere[J]. Chinese Optics, 2021, 14(2): 409-417. doi: 10.37188/CO.2020-0095

斜程湍流大气中部分相干艾里光束的偏振特性研究

详细信息
  • 中图分类号: TN929.1

Polarization changes of partially-coherent Airy-Gaussian beams in a slanted turbulent atmosphere

doi: 10.37188/CO.2020-0095
Funds: Supported by Sichuan Science and Technology Program (No. 2020YJ0431)
More Information
    Author Bio:

    Cheng Ke (1979—), M.Sc, Professor, College of Optoelectronic Engineering, Chengdu University of Information Technology. His research interests are in propagation and high-power laser control. E-mail: ck@cuit.edu.cn

    Corresponding author: ck@cuit.edu.cn
  • 摘要: 偏振是激光通信中保密编码的重要参数,研究斜程湍流大气中的偏振特性对激光通信具有重要意义。利用广义惠更斯-菲涅尔原理和偏振-相干统一理论,推导了无衍射的部分相干艾里高斯光束在斜程湍流大气传输中的偏振度解析式,详细研究了湍流参数、相干长度、天顶角、截断因子和分布因子对偏振度的影响。研究结果表明:与水平湍流相比,光束在斜程湍流下恢复到初始偏振需要更长的传输距离。天顶角、接收高度、截断因子、分布因子越大和相干长度越小,光束偏振度峰值也越大。高相干性的高斯光束比艾里光束更易于保持偏振度不变。无衍射艾里光束中选取合适的光学参数更有利于信息传输与编码,本文结果对激光大气通信领域有着潜在的应用价值。

     

  • Figure 1.  The DoP of a partially coherent Airy-Gaussian beam passing horizontally through a turbulent atmosphere versus propagation distance

    Figure 2.  Change of the DoP in partially coherent Airy-Gaussian beams in a slanted turbulence atmosphere over the zenith angle with varying parameters. The fixed parameters are C0=1.7×10−14 m2/3 and z=10 km.

    Figure 3.  Change in DoP for partially coherent Airy-Gaussian beams over propagation distance z for different coherence lengths, where solid and dashed lines show a horizontal and slanted path, respectively. The other parameters are a=0.05, b=20, H=10000 m and Cn2=10−14 m2/3.

    Figure 4.  Change in DoP for partially coherent Airy-Gaussian beams over propagation distance z for different truncation or distribution factors, where the solid and dash lines show the horizontal and slanted paths, respectively. The fixed parameters are (a) b=20, H=10000 m and Cn2=10−14 m2/3; (b) a=0.05, H=10000 m and Cn2=10−14 m2/3.

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出版历程
  • 收稿日期:  2020-05-22
  • 修回日期:  2020-07-13
  • 网络出版日期:  2021-02-26
  • 刊出日期:  2021-03-23

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