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Proceedings Paper

Propagation of higher-order annular Laguerre-Gauss beams in atmospheric turbulence
Author(s): Frida E. Strömqvist Vetelino; Ricky J. Morgan
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Paper Abstract

The extended Huygens-Fresnel integral, with a quadratic structure function approximation, was used to derive closed form analytical expressions for the mean irradiance and spot size of higher-order annular Laguerre-Gaussian beams propagating in atmospheric turbulence. Comparisons were made to free space propagation of Laguerre-Gaussian modes, in which the spatial distribution is preserved as the beam spreads due to natural diffraction. It was found that the central void in annular Laguerre-Gaussian beams of any order is filled in as the turbulence strength increases. Higher order modes are less sensitive to the turbulence distortions compared to lower order annular beams, since higher order beams have a smaller turbulence induced fractional increase in their spot size compared to the lower order modes.

Paper Details

Date Published: 22 April 2010
PDF: 11 pages
Proc. SPIE 7685, Atmospheric Propagation VII, 768503 (22 April 2010); doi: 10.1117/12.852582
Show Author Affiliations
Frida E. Strömqvist Vetelino, Aerospace Missions Corp. (United States)
Ricky J. Morgan, Aerospace Missions Corp. (United States)

Published in SPIE Proceedings Vol. 7685:
Atmospheric Propagation VII
Linda M. Wasiczko Thomas; Earl J. Spillar, Editor(s)

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