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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 2 — Jan. 10, 2009
  • pp: 167–175

On-axis probability density function and fade behavior of partially coherent beams propagating through turbulence

Xifeng Xiao and David Voelz  »View Author Affiliations


Applied Optics, Vol. 48, Issue 2, pp. 167-175 (2009)
http://dx.doi.org/10.1364/AO.48.000167


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Abstract

We examine the gamma–gamma and lognormal distributions as they apply to the irradiance at a point detector produced by partially coherent beams propagating horizontally through atmospheric turbulence. Our investigation compares the probability density functions and probability of fade predicted by the distributions with results from a wave-optics simulation developed for partially coherent beam propagation. For a partially coherent beam that is not too far removed from a coherent beam, we find the wave-optics results tend to the gamma–gamma model for the weak fluctuation regime and the results are closer to the lognormal model for the strong fluctuation regime. We observe that increasing the initial beam size/Fried parameter ratio ( w 0 / r 0 ) or shortening the coherence length ( l c ) tends to narrow the probability density profile produced by the simulation.

© 2009 Optical Society of America

OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(060.4510) Fiber optics and optical communications : Optical communications
(110.4980) Imaging systems : Partial coherence in imaging
(290.5930) Scattering : Scintillation

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: May 22, 2008
Revised Manuscript: November 20, 2008
Manuscript Accepted: November 20, 2008
Published: January 7, 2009

Citation
Xifeng Xiao and David Voelz, "On-axis probability density function and fade behavior of partially coherent beams propagating through turbulence," Appl. Opt. 48, 167-175 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-2-167


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