Scintillation characteristics of cosh-Gaussian beams
Applied Optics, Vol. 46, Issue 7, pp. 1099-1106 (2007)
http://dx.doi.org/10.1364/AO.46.001099
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Abstract
By using the generalized beam formulation, the scintillation index is derived and evaluated for cosh-Gaussian beams in a turbulent atmosphere. Comparisons are made to cos-Gaussian and Gaussian beam scintillations. The variations of scintillations against propagation length at different values of displacement and focusing parameters are examined. The dependence of scintillations on source size at different propagation lengths is also investigated. Two-dimensional scintillation index distributions covering the entire transverse receiver planes are given. From the graphic illustrations, it is found that in comparison to pure Gaussian beams cosh-Gaussian beams have lower on-axis scintillations at smaller source sizes and longer propagation distances. The focusing effect appears to impose more reduction on the cosh-Gaussian beam scintillations than those of the Gaussian beam. The distribution of the off-axis scintillation index values of the Gaussian beams appears to be uniform over the transverse receiver plane, whereas that of the cosh-Gaussian beam is arranged according to the position of the slanted axis.
© 2007 Optical Society of America
OCIS Codes
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.3310) Atmospheric and oceanic optics : Laser beam transmission
(060.4510) Fiber optics and optical communications : Optical communications
History
Original Manuscript: June 27, 2006
Manuscript Accepted: October 9, 2006
Published: February 12, 2007
Citation
Halil T. Eyyuboglu and Yahya Baykal, "Scintillation characteristics of cosh-Gaussian beams," Appl. Opt. 46, 1099-1106 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-7-1099
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