Beam Quality Factor and Its Effect on Laser Beam through Anisotropic Turbulence for OWC

被引：0
作者：
Gao, Zhan [1 ]
Li, Ziyang [1 ]
Dang, Anhong [1 ]
机构：
[1] Peking Univ, Dept Elect, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China
来源：
2019 15TH INTERNATIONAL CONFERENCE ON TELECOMMUNICATIONS (CONTEL) | 2019年
关键词：
beam quality factor; non-Kolmogorov turbulence; anisotropy; general spectral power law; inner and outter scales; SPACE OPTICAL COMMUNICATION; NON-KOLMOGOROV TURBULENCE; PARTIALLY COHERENT BEAMS; SCHELL-MODEL BEAM; ATMOSPHERIC-TURBULENCE; MOMENTS;
D O I：
10.1109/contel.2019.8848537
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
For optical wireless communication (OWC), beam quality factor is used as an important parameter to evaluate the propagation of laser beam through atmospheric turbulence. The beam quality factor and its effect on laser beam are investigated using the generalized anisotropic non-Kolmogorov power spectrum such that anisotropy property of turbulence, general spectral power law, and turbulence inner and outer scales can be considered together. We derive new expressions of beam quality factor for the lowest-order Gaussian beam and higher-mode Hermite-Gaussian beam. The effect of beam quality factor on the beam intensity through turbulence is also analyzed. Numerical results are presented to exhibit influences of different turbulence parameters on the beam quality factor and further on the propagation of laser beam, which provides a better understanding for OWC over free space.
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页数：7
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