24 August 2010 Gaussian beam propagation in maritime atmospheric turbulence: long term beam spread and beam wander analysis
Author Affiliations +
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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Italo Toselli, Brij Agrawal, and Sergio Restaino "Gaussian beam propagation in maritime atmospheric turbulence: long term beam spread and beam wander analysis", Proc. SPIE 7814, Free-Space Laser Communications X, 78140R (24 August 2010); doi: 10.1117/12.864274; https://doi.org/10.1117/12.864274
PROCEEDINGS
10 PAGES


SHARE
Advertisement
Advertisement
Back to Top