Pattern characteristics of laser beams in a ground-to-satellite optical link

Guangsen Ren; Qianrong Chen; Yongwang Hao; Wenpan Zhang; Hua Li; Yanbin Wang; Rongzhen Zhu

doi:10.1117/12.2230650

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26 January 2016 Pattern characteristics of laser beams in a ground-to-satellite optical link

Guangsen Ren, Qianrong Chen, Yongwang Hao, Wenpan Zhang, Hua Li, Yanbin Wang, Rongzhen Zhu

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Proceedings Volume 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015; 97960L (2016) https://doi.org/10.1117/12.2230650
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held November 2015, 2015, Various, China

Abstract

Due to influence of atmosphere turbulence, distribution characteristics of laser speckles vary with propagation distances. In this paper, numerical calculation using a multiple-phase screen method is performed to simulate the propagation of laser beam in the turbulence. The distributions of intensity at different distances are calculated. A characteristic factor σ² is proposed to quantify the degree of turbulence induced intensity spatial fluctuation compared with the same beam propagating in vacuum. The results show that, at the same distance, mean σ² of the beam propagating perpendicularly is smaller than the beam propagating horizontally. For a perpendicularly transmitted Gaussian beam, mean σ² decreases gradually after it reaches its maximum value, and tends to be stable if the propagation distance is long enough.

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Guangsen Ren, Qianrong Chen, Yongwang Hao, Wenpan Zhang, Hua Li, Yanbin Wang, and Rongzhen Zhu "Pattern characteristics of laser beams in a ground-to-satellite optical link", Proc. SPIE 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015, 97960L (26 January 2016); https://doi.org/10.1117/12.2230650

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