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

• 来源期刊: 中国物理B（英文版）
• 关键词: atmospheric optics non-Kolmogorov turbulence scintillation index Gaussian-beam wave
• 年，卷（期）: 2018,（3）
• 页码范围: 244-252
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/3/034201

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.