| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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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 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
2 State Key Laboratory of Pulsed Power Laser Technology, Hefei 230037, China |
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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.
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Received: 09 October 2017
Revised: 08 January 2018
Accepted manuscript online:
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PACS:
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42.25.Dd
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(Wave propagation in random media)
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42.25.Kb
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(Coherence)
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42.68.Bz
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(Atmospheric turbulence effects)
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92.60.hk
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(Convection, turbulence, and diffusion)
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| Fund: 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). |
Corresponding Authors:
Lixin Guo
E-mail: lxguo@xidian.edu.cn
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Cite this article:
Mingjian Cheng(程明建), Lixin Guo(郭立新), Jiangting Li(李江挺) Influence of moderate-to-strong anisotropic non-Kolmogorov turbulence on intensity fluctuations of a Gaussian-Schell model beam in marine atmosphere 2018 Chin. Phys. B 27 054203
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