Atmospheric and Ocean Optics

Beam wander analysis for focused partially coherent beams propagating in turbulence

[+] Author Affiliations
Xifeng Xiao

New Mexico State University, Klipsch School of Electrical and Computer Engineering, Las Cruces, New Mexico 88003

David G. Voelz

New Mexico State University, Klipsch School of Electrical and Computer Engineering, Las Cruces, New Mexico 88003

Opt. Eng. 51(2), 026001 (Mar 01, 2012). doi:10.1117/1.OE.51.2.026001
History: Received October 11, 2011; Revised December 26, 2011; Accepted December 28, 2011
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Abstract.  We extend the theory of beam wander for propagation through atmospheric turbulence to the case of a focused partially coherent beam (PCB). In addition to investigating the beam wander expression, we restate expressions for the beam size, long- and short-time average beam intensity profile, and the on-axis scintillation index of tracked and untracked beams. A wave optics simulation is implemented and the numerical results are compared with corresponding analytic results. The cases examined involve turbulence strengths ranging from Cn2=1016 to 1014m2/3 and for various horizontal paths ranging from 1 to 10 km. Although the extended analytic theory stems from a study of coherent beams, the simulation results show good agreement with the analytical results for PCBs in fluctuation regimes ranging from weak to intermediate.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Xifeng Xiao and David G. Voelz
"Beam wander analysis for focused partially coherent beams propagating in turbulence", Opt. Eng. 51(2), 026001 (Mar 01, 2012). ; http://dx.doi.org/10.1117/1.OE.51.2.026001


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