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Proceedings Paper

Gaussian beam propagation in maritime atmospheric turbulence: long term beam spread and beam wander analysis
Author(s): Italo Toselli; Brij Agrawal; Sergio Restaino
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Paper Abstract

Laser beam propagation in maritime environment is particularly challenging, not only for scattering and absorption due to high humidity, but also for a different behavior of atmospheric turbulence with respect to terrestrial propagation. Recently, a new power spectrum for the fluctuations of the refractive index in the Earth's atmosphere has been introduced to describe maritime atmospheric turbulence. This maritime power spectral model shows a characteristic bump, similar to Hill's bump, that appears when the product between the wavenumber and the inner scale is around unity, κ • l0 ~1. In this paper, under weak turbulence conditions, we use the mentioned maritime power spectrum to analyze long term beam spread, beam wander and Strehl ratio of a Gaussian beam wave propagating through maritime atmospheric turbulence.

Paper Details

Date Published: 24 August 2010
PDF: 10 pages
Proc. SPIE 7814, Free-Space Laser Communications X, 78140R (24 August 2010);
Show Author Affiliations
Italo Toselli, Naval Postgraduate School (United States)
Brij Agrawal, Naval Postgraduate School (United States)
Sergio Restaino, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 7814:
Free-Space Laser Communications X
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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