Log-amplitude variance for a Gaussian-beam wave propagating through non-Kolmogorov turbulence

In the past decades, both the increasing experimental evidences and some results of theoretical investigation on non-Kolmogorov turbulence have been reported. This has prompted the study of optical propagation in non-Kolmogorov atmospheric turbulence. In this paper, using a non-Kolmogorov power spec...

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Bibliographic Details
Published in:Optics express 2010-01, Vol.18 (2), p.451-462
Main Authors: Tan, Liying, Du, Wenhe, Ma, Jing, Yu, Siyuan, Han, Qiqi
Format: Article
Language:English
Subjects:
Computer Simulation
Light
Models, Statistical
Nephelometry and Turbidimetry - methods
Nonlinear Dynamics
Normal Distribution
Scattering, Radiation
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Summary:In the past decades, both the increasing experimental evidences and some results of theoretical investigation on non-Kolmogorov turbulence have been reported. This has prompted the study of optical propagation in non-Kolmogorov atmospheric turbulence. In this paper, using a non-Kolmogorov power spectrum which owns a generalized power law instead of standard Kolmogorov power law value 11/3 and a generalized amplitude factor instead of constant value 0.033, the log-amplitude variances for a Gaussian-beam wave are derived in the weak-fluctuation regime for a horizontal path. The analytic expressions are obtained and then used to analyze the effect of spectral power-law variations on the log-amplitude fluctuations of Gaussian-beam wave.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.18.000451