中国物理B ›› 2018, Vol. 27 ›› Issue (5): 54203-054203.doi: 10.1088/1674-1056/27/5/054203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Influence of moderate-to-strong anisotropic non-Kolmogorov turbulence on intensity fluctuations of a Gaussian-Schell model beam in marine atmosphere

Mingjian Cheng(程明建), Lixin Guo(郭立新), Jiangting Li(李江挺)   

  1. 1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
    2 State Key Laboratory of Pulsed Power Laser Technology, Hefei 230037, China
  • 收稿日期:2017-10-09 修回日期:2018-01-08 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: Lixin Guo E-mail:lxguo@xidian.edu.cn
  • 基金资助:
    Project supported by the Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology (Grant No.SKL2016KF05),the Key Industrial Innovation Chain Project in Industrial Domain,China (Grant No.2017ZDCXL-GY-06-02),the Huawei Innovation Research Program,China (Grant No.HO2017050001AG),and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No.61621005).

Influence of moderate-to-strong anisotropic non-Kolmogorov turbulence on intensity fluctuations of a Gaussian-Schell model beam in marine atmosphere

Mingjian Cheng(程明建)1,2, Lixin Guo(郭立新)1, Jiangting Li(李江挺)1   

  1. 1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
    2 State Key Laboratory of Pulsed Power Laser Technology, Hefei 230037, China
  • Received:2017-10-09 Revised:2018-01-08 Online:2018-05-05 Published:2018-05-05
  • Contact: Lixin Guo E-mail:lxguo@xidian.edu.cn
  • Supported by:
    Project supported by the Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology (Grant No.SKL2016KF05),the Key Industrial Innovation Chain Project in Industrial Domain,China (Grant No.2017ZDCXL-GY-06-02),the Huawei Innovation Research Program,China (Grant No.HO2017050001AG),and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No.61621005).

摘要: The scintillation index (SI) of a Gaussian-Schell model (GSM) beam in a moderate-to-strong anisotropic non-Kolmogorov turbulent atmosphere is developed based on the extended Rytov theory. The on-axis SI in a marine atmosphere is higher than that in a terrestrial atmosphere, but the off-axis SI exhibits the opposite trend. The on-axis SI first increases and then begins to decrease and saturate as the turbulence strength increases. Turbulence inner and outer scales have different effects on the on-axis SI in different turbulent fluctuation regions. The anisotropy characteristic of atmospheric turbulence leads to the decline in the on-axis SI, and the rise in the off-axis SI. The on-axis SI can be lowered by increasing the anisotropy of turbulence, wavelength, and source partial coherence before entering the saturation attenuation region. The developed model may be useful for evaluating ship-to-ship/shore free-space optical communication system performance.

关键词: atmospheric turbulence, Gaussian-Schell model beam, scintillation, atmospheric propagation

Abstract: The scintillation index (SI) of a Gaussian-Schell model (GSM) beam in a moderate-to-strong anisotropic non-Kolmogorov turbulent atmosphere is developed based on the extended Rytov theory. The on-axis SI in a marine atmosphere is higher than that in a terrestrial atmosphere, but the off-axis SI exhibits the opposite trend. The on-axis SI first increases and then begins to decrease and saturate as the turbulence strength increases. Turbulence inner and outer scales have different effects on the on-axis SI in different turbulent fluctuation regions. The anisotropy characteristic of atmospheric turbulence leads to the decline in the on-axis SI, and the rise in the off-axis SI. The on-axis SI can be lowered by increasing the anisotropy of turbulence, wavelength, and source partial coherence before entering the saturation attenuation region. The developed model may be useful for evaluating ship-to-ship/shore free-space optical communication system performance.

Key words: atmospheric turbulence, Gaussian-Schell model beam, scintillation, atmospheric propagation

中图分类号:  (Wave propagation in random media)

  • 42.25.Dd
42.25.Kb (Coherence) 42.68.Bz (Atmospheric turbulence effects) 92.60.hk (Convection, turbulence, and diffusion)