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Proceedings Paper

Simultaneous scintillation measurements of coherent and partially coherent beams in an open atmosphere experiment
Author(s): Anatoly Efimov; Kirill Velizhanin; Grigory Gelikonov
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Paper Abstract

Scintillation indices, probability distribution functions and signal spectra are measured simultaneously for spatially coherent and partially coherent optical beams propagating through various distances in an open atmosphere. The partially coherent beam is produced by coupling the broadband output of a superluminescent diode to a multimode optical fiber. A simple system to adjust the coherence radius by controlling the numerical aperture at the fiber output is implemented. Substantial reduction of the scintillation index and signal fade probability as compared to a slightly diverging coherent Gaussian beam are observed at all propagation distances studied up to 6.5 km.

Paper Details

Date Published: 6 March 2014
PDF: 8 pages
Proc. SPIE 8971, Free-Space Laser Communication and Atmospheric Propagation XXVI, 897105 (6 March 2014); doi: 10.1117/12.2037416
Show Author Affiliations
Anatoly Efimov, Los Alamos National Lab. (United States)
Kirill Velizhanin, Los Alamos National Lab. (United States)
Grigory Gelikonov, Institute of Applied Physics (Russian Federation)


Published in SPIE Proceedings Vol. 8971:
Free-Space Laser Communication and Atmospheric Propagation XXVI
Hamid Hemmati; Don M. Boroson, Editor(s)

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