Correlations of photon trajectories in the problem of light scintillations

A distribution function approach is applied to describe the dynamics of the laser beam in the Earth atmosphere. Using a formal solution of the kinetic equation for the distribution function, we have developed an iterative scheme for calculation of the scintillation index (\(\sigma^2\)). The problem...

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Bibliographic Details
Published inarXiv.org
Main Authors Chumak, Oleksandr O, Baskov, Roman A
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 15.09.2015
Subjects
Coherent light
Correlation
Distribution functions
Iterative methods
Kinetic equations
Laser beams
Mathematical analysis
Physics - Optics
Physics - Quantum Physics
Trajectories
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Summary:A distribution function approach is applied to describe the dynamics of the laser beam in the Earth atmosphere. Using a formal solution of the kinetic equation for the distribution function, we have developed an iterative scheme for calculation of the scintillation index (\(\sigma^2\)). The problem reduces to obtaining the photon trajectories and their correlations. Bringing together theoretical calculations and many-fold computer integrations, the value of \(\sigma^2\) is obtained. It is shown that a considerable growth of \(\sigma^2\) in the range of a moderate turbulence is due to the correlations of different trajectories. The criteria of applicability of our approach for both the coherent and partially coherent light are derived.
ISSN:2331-8422
DOI:10.48550/arxiv.1509.04548