30 April 2003 Account of an optical beam spreading caused by turbulence for the problem of partially coherent wavefield propagation through inhomogeneous absorbing media
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Proceedings Volume 4976, Atmospheric Propagation; (2003); doi: 10.1117/12.479195
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States
Abstract
The propagation problem for partially coherent wave fields in inhomogeneous media is considered in this work. The influence of refraction, inhomogeneity of gain medium properties and refraction parameter fluctuations on target characteristics of radiation are taken into consideration. Such problems arise in the study of laser propagation on atmosphere paths, under investigation of directional radiation pattern forming for lasers which gain media is characterized by strong fluctuation of dielectric constant and for lasers which resonator have an atmosphere area. The ray-tracing technique allows us to make effective algorithms for modeling of a partially coherent wave field propagation through inhomogeneous random media is presented for case when the influecne of an optical wave refraction, the influence of the inhomogeiety of radiaitn amplification or absorption, and also the influence of fluctuations of a refraction parameter on target radiation parameters are basic. Novelty of the technique consists in the account of the additional refraction caused by inhomogeneity of gain, and also in the method of an account of turbulent distortions of a beam with any initial coherence allowing to execute construction of effective numerical algorithms. The technique based on the solution of the equation for coherence function of the second order.
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Vadim V. Dudorov, Valerii V. Kolosov, "Account of an optical beam spreading caused by turbulence for the problem of partially coherent wavefield propagation through inhomogeneous absorbing media", Proc. SPIE 4976, Atmospheric Propagation, (30 April 2003); doi: 10.1117/12.479195; https://doi.org/10.1117/12.479195
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KEYWORDS
Turbulence

Atmospheric propagation

Refraction

Wave propagation

Dielectrics

Absorption

Beam propagation method

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