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Proceedings Article

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

[+] Author Affiliations
Olga Korotkova

Univ. of Central Florida (USA)

Larry C. Andrews

CREOL/Univ. of Central Florida (USA)

Ronald L. Phillips

Florida Space Institute (USA)

Proc. SPIE 4821, Free-Space Laser Communication and Laser Imaging II, 98 (December 1, 2002); doi:10.1117/12.452054
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From Conference Volume 4821

  • Free-Space Laser Communication and Laser Imaging II
  • Jennifer C. Ricklin; David G. Voelz
  • Seattle, WA | July 07, 2002

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.

© (2002) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Olga Korotkova ; Larry C. Andrews and Ronald L. Phillips
"Speckle propagation through atmospheric turbulence: effects of a random phase screen at the source", Proc. SPIE 4821, Free-Space Laser Communication and Laser Imaging II, 98 (December 1, 2002); doi:10.1117/12.452054; http://dx.doi.org/10.1117/12.452054


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