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Proceedings Paper

Speckle propagation through atmospheric turbulence: effects of a random phase screen at the source
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Paper Abstract

By using ABCD ray matrix theory and a random phase screen located near the source, analytic expressions are developed for the mutual coherence function and scintillation index of a Gaussian-beam wave propagating through weak atmospheric turbulence in both the pupil plane and image plane of a receiving. The phase screen model that we use is based on a previous double-pass analysis by the authors for analyzing speckle propagation from a rough target in a lidar system. In the present context, it serves as a model for a partially coherent Gaussian-beam wave that is currently used in laser communications. The effect of partial coherence (induced by a diffuser) on the scintillation index of the beam in the presence of weak atmospheric turbulence is investigated as a function of the correlation length of the diffuser and the propagation distance.

Paper Details

Date Published: 9 December 2002
PDF: 12 pages
Proc. SPIE 4821, Free-Space Laser Communication and Laser Imaging II, (9 December 2002); doi: 10.1117/12.452054
Show Author Affiliations
Olga Korotkova, Univ. of Central Florida (United States)
Larry C. Andrews, CREOL/Univ. of Central Florida (United States)
Ronald L. Phillips, Florida Space Institute (United States)

Published in SPIE Proceedings Vol. 4821:
Free-Space Laser Communication and Laser Imaging II
Jennifer C. Ricklin; David G. Voelz, Editor(s)

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