Further analysis of scintillation index for a laser beam propagating through moderate-to-strong non-Kolmogorov turbulence based on generalized effective atmospheric spectral model

doi:10.1088/1674-1056/27/3/034201

中国物理B ›› 2018, Vol. 27 ›› Issue (3): 34201-034201.doi: 10.1088/1674-1056/27/3/034201

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

Further analysis of scintillation index for a laser beam propagating through moderate-to-strong non-Kolmogorov turbulence based on generalized effective atmospheric spectral model

Jing Ma(马晶), Yu-Long Fu(付玉龙), Si-Yuan Yu(于思源), Xiao-Long Xie(谢小龙), Li-Ying Tan(谭立英)

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China

收稿日期:2017-09-29 修回日期:2017-11-30 出版日期:2018-03-05 发布日期:2018-03-05
通讯作者: Yu-Long Fu E-mail:fuyulongm@163.com

Further analysis of scintillation index for a laser beam propagating through moderate-to-strong non-Kolmogorov turbulence based on generalized effective atmospheric spectral model

Jing Ma(马晶), Yu-Long Fu(付玉龙), Si-Yuan Yu(于思源), Xiao-Long Xie(谢小龙), Li-Ying Tan(谭立英)

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China

Received:2017-09-29 Revised:2017-11-30 Online:2018-03-05 Published:2018-03-05
Contact: Yu-Long Fu E-mail:fuyulongm@163.com

摘要/Abstract

摘要： A new expression of the scintillation index (SI) for a Gaussian-beam wave propagating through moderate-to-strong non-Kolmogorov turbulence is derived, using a generalized effective atmospheric spectrum and the extended Rytov approximation theory. Finite inner and outer scale parameters and high wave number “bump” are considered in the spectrum with a generalized spectral power law in the range of 3-4, instead of the fixed classical Kolmogorov power law of 11/3. The obtained SI expression is then used to analyze the effects of the spectral power law and the inner scale and outer scale on SI under various non-Kolmogorov fluctuation conditions. These results will be useful in future investigations of optical wave propagation through atmospheric turbulence.

关键词: atmospheric optics, non-Kolmogorov turbulence, scintillation index, Gaussian-beam wave

Abstract: A new expression of the scintillation index (SI) for a Gaussian-beam wave propagating through moderate-to-strong non-Kolmogorov turbulence is derived, using a generalized effective atmospheric spectrum and the extended Rytov approximation theory. Finite inner and outer scale parameters and high wave number “bump” are considered in the spectrum with a generalized spectral power law in the range of 3-4, instead of the fixed classical Kolmogorov power law of 11/3. The obtained SI expression is then used to analyze the effects of the spectral power law and the inner scale and outer scale on SI under various non-Kolmogorov fluctuation conditions. These results will be useful in future investigations of optical wave propagation through atmospheric turbulence.

Key words: atmospheric optics, non-Kolmogorov turbulence, scintillation index, Gaussian-beam wave

中图分类号: (Wave propagation, transmission and absorption)

42.25.Bs

42.25.Dd (Wave propagation in random media) 42.68.Bz (Atmospheric turbulence effects) 42.68.Ay (Propagation, transmission, attenuation, and radiative transfer)

马晶, 付玉龙, 于思源, 谢小龙, 谭立英. Further analysis of scintillation index for a laser beam propagating through moderate-to-strong non-Kolmogorov turbulence based on generalized effective atmospheric spectral model[J]. 中国物理B, 2018, 27(3): 34201-034201.

Jing Ma(马晶), Yu-Long Fu(付玉龙), Si-Yuan Yu(于思源), Xiao-Long Xie(谢小龙), Li-Ying Tan(谭立英). Further analysis of scintillation index for a laser beam propagating through moderate-to-strong non-Kolmogorov turbulence based on generalized effective atmospheric spectral model[J]. Chin. Phys. B, 2018, 27(3): 34201-034201.

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Further analysis of scintillation index for a laser beam propagating through moderate-to-strong non-Kolmogorov turbulence based on generalized effective atmospheric spectral model

Further analysis of scintillation index for a laser beam propagating through moderate-to-strong non-Kolmogorov turbulence based on generalized effective atmospheric spectral model

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