| GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
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Turbulence-induced changes in degree of polarization, degree of coherence and spectrum of partially coherent electromagnetic beams |
| Ji Xiao-Ling (季小玲)† and Pu Zheng-Cai (蒲政才) |
| College of Physics, Sichuan Normal University, Chengdu 610068, China |
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Abstract Based on a recently formulated unified theory of coherence and polarization, a method is described to study turbulence-induced changes in the polarization, the coherence and the spectrum of partially coherent electromagnetic beams on propagation. The electromagnetic Gaussian Schell-model beam is taken as a typical example of partially coherent electromagnetic beams, and the closed-form expressions for the degree of polarization, the degree of coherence and the spectrum of electromagnetic Gaussian Schell-model beams propagating through atmospheric turbulence are derived in the quadratic approximation of Rytov's phase structure function. Some interesting results are obtained, which are illustrated by numerical examples and are explained in physics.
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Received: 25 March 2009
Revised: 06 August 2009
Accepted manuscript online:
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PACS:
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42.68.Mj
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(Scattering, polarization)
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42.68.Ay
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(Propagation, transmission, attenuation, and radiative transfer)
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42.68.Bz
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(Atmospheric turbulence effects)
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| Fund: Project supported by the National
Natural Science Foundation of China (Grant No. 60778048). |
Cite this article:
Ji Xiao-Ling (季小玲) and Pu Zheng-Cai (蒲政才) Turbulence-induced changes in degree of polarization, degree of coherence and spectrum of partially coherent electromagnetic beams 2010 Chin. Phys. B 19 029201
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