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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); doi: 10.1117/12.864274
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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