Polarization properties of polarized and partially coherent Electromagnetic Gaussian-Schell model pulse beams on slant path in turbulent atmosphere |
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Affiliation: | 1. Department of Physics, Sichuan Normal University, Chengdu 610068, China;2. Department of Physics, Zhejiang University, Hangzhou 310027, China;1. Special and Key Laboratory of Guizhou Provincial Higher Education for Green Energy-Saving Materials, Guizhou Minzu University, Guiyang 550025, China;2. School of Science, Zhejiang Sci.-Tech. University, Hangzhou 310018, China;3. Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China;1. Institute of Photonics, University of Eastern Finland, PO Box 111, FI-80101 Joensuu, Finland;2. Department of Applied Physics, Aalto University, PO Box 13500, FI-00076 Aalto, Finland |
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Abstract: | This paper is based on the unified theory of coherence and polarization of stochastic electromagnetic beams and the extended Huygens–Fresnel principle, combined with the quadratic approximation of Rytov’s phase structure function and the generalized Stokes parameters. We have derived the novel expressions for the cross-spectral density matrix elements and the degree of cross-polarization of a class of elliptically polarized spatially and spectrally partially coherent Electromagnetic Gaussian-Schell model pulse (EGSMP) beams propagating through atmospheric turbulence along a slant path. Additionally, we calculate and analyze the effects of the turbulent intensity, the initial pulse duration, waist width of the beam, the spatial coherence length and temporal coherence length et al. on the polarization properties of fully polarized and partially coherent EGSMP beams. Finally, a comparison of the impact of those factors on the partially polarization beams is made. The results show that the influences of the turbulent intensity, the initial pulse duration, waist width of the beam, the spatial coherence length and temporal coherence length et al. on the polarization properties of fully polarized and partially coherent EGSMP beams are larger. While the effects of those parameters on the partially polarization and partially coherent EGSMP beams are smaller. It is noted that the results of this paper have established sound theoretical basis on the topic of improving performance of the laser system propagating through the atmospheric turbulence. |
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Keywords: | Elliptically polarization Electromagnetic Gaussian-Schell model pulse beams Atmospheric turbulence The generalized Stokes parameters The degree of cross-polarization |
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