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Atmospheric and Ocean Optics

Angle-of-arrival fluctuations for general-type beams

[+] Author Affiliations
Halil T. Eyyuboğlu

Çankaya University,Electronic and Communication Engineering Department, Ögretmenler Cad., No: 14 Yüzüncüyil, 06530 Balgat Ankara, Turkey

Yahya Baykal

Çankaya University,Electronic and Communication Engineering Department, Ögretmenler Cad., No: 14 Yüzüncüyil, 06530 Balgat Ankara, Turkey

Opt. Eng. 46(9), 096001 (October 01, 2007). doi:10.1117/1.2783410
History: Received November 20, 2006; Revised February 16, 2007; Accepted March 25, 2007; Published October 01, 2007
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Starting with the recently introduced phase correlation function of a general-type beam, the angle-of-arrival fluctuations are derived and evaluated in atmospheric turbulence for lowest-order Gaussian, cos-Gaussian, cosh-Gaussian, annular, and flat-topped beams. Our motivation is to examine the improvement in the performance of optical atmospheric links when such beams are employed. For these beams, the dependence of the angle-of-arrival fluctuations on the propagation length, displacement and focusing parameters, source size, inner and outer scales of turbulence, and receiver radius is investigated. It is found that in the majority of the cases examined, the angle-of-arrival fluctuations remain small and hence are not expected to adversely affect the operation of free-space atmospheric links. It is observed that amongst the beams considered, the cos-Gaussian beam offers the least amount of angle-of-arrival fluctuations, while the worst behavior is exhibited by the cosh-Gaussian beam. This situation is reversed, however, if focused beams are used.

© 2007 Society of Photo-Optical Instrumentation Engineers

Citation

Halil T. Eyyuboğlu and Yahya Baykal
"Angle-of-arrival fluctuations for general-type beams", Opt. Eng. 46(9), 096001 (October 01, 2007). ; http://dx.doi.org/10.1117/1.2783410


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