Polarization properties of Gaussian-Schell model beams passing through focal optical system
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摘要: 为了研究高斯-谢尔模型光束的偏振特性,采用交叉谱密度矩阵的方法,研究了该光束通过聚焦光学系统的偏振特性,得到了完全偏振和完全非偏振光束保持偏振度不变的条件,并给出了通过聚焦光学系统后传输平面偏振度实现均匀分布的条件。结果表明,聚焦光学系统中偏振度在焦点位置附近有明显的起伏变化;焦点位置上的偏振度等于其在自由空间传输时的远场稳定偏振度。该研究对激光传输领域具有重要的理论和现实意义。Abstract: In order to study polarization properties of Gaussian-Schell model beams, the method of cross-spectral density matrix was adopted to study polarization properties of Gaussian-Schell model beams propagating through a focal optical system. The conditions, under which complete polarized and complete non-polarized beams kept the degree of polarization invariable in the focal optical system, were provided. The condition where the degree of polarization distributed homogeneously at propagation plane was also given. The degree of polarization had a sharp fluctuation at focal position in a focal optical system. The degree of polarization at focal position equaled the stable value of the degree of polarization at far field. The study had important theoretical and practical significance in the field of laser transmission.
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[1] WOLF E. Unified theory of coherence and polarization of random electromagnetic beams[J]. Physics Letters,2003,A312(5):263-267.
[2] SALEM M, KOROTKOVA O, DOGARIU A, et al. Polarization changes in partially coherent electromagnetic beams propagating through turbulent atmosphere[J]. Waves Random Media, 2004, 14(4): 513-523.
[3] JI X L, ZHANG E T, LÜ B D. Changes in the spectrum and polarization of polychromatic partially coherent electromagnetic beams in the turbulent atmosphere[J]. Optics Communications, 2007, 275(2): 292-300.
[4] JI X L, CHEN S H, LI X Q. Polarization properties of partially coherent electromagnetic Hermite-Gaussian beams in atmospheric turbulence[J]. Chinese Journal of Lasers, 2008, 35(1): 67-72(in Chinese).
[5] EYYUBOGLU H T, BAYKAL Y, CAI Y. Degree of polarization for partially coherent general beams in turbulent atmosphere[J]. Applied Physics,2007,B89(1):91-97.
[6] JAMES D F V. Change of polarization of light beams on propagation in free space[J]. Journal of the Optical Society of America,1994,A11(5):1641-1643.
[7] KOROTKOVA O, WOLF E. Changes in the state of polarization of a random electromagnetic beam on propagation[J]. Optics Communications, 2005, 246(1): 35-43.
[8] SHIRAI T. Polarization properties of a class of electromagnetic Gaussian Schell-model beams which have the same far-zone intensity distribution as a fully coherent laser beam[J]. Optics Communications, 2005, 256(4): 197-209.
[9] WOLF E. Correlation-induced changes in the degree of polarization, the degree of coherence, and the spectrum of random electromagnetic beams on propagation[J]. Optics Letters, 2003, 28(13): 1078-1080.
[10] LV B D. Laser optics[M]. Chengdu: Sichuan University Press, 1992:191-231(in Chinese).
[11] ZHAO D M, ZHU Y B. Generalized formulas for stochastic electromagnetic beams on inverse propagation through nonsymmetrical optical systems[J]. Optics Letters, 2009, 34(7): 884-886.
[12] ZHANG G W, PU J X. Stochastic electromagnetic beams focused by a bifocal lens[J]. Journal of the Optical Society of America,2008,A25(7):1710-1715.
[13] KOROTKOVA O, SALEM M, WOLF E. Beam conditions for radiation generated by an electromagnetic Gaussian Schell-model source[J]. Optics Letters,2004,29(11):1173-1175.
[14] GORI F, SANTARSIERO M, PIQUERO G, et al. Partially polarized Gaussian Schell-model beams[J]. Journal of Optics,2001,A3(1):1-9.
[15] ROYCHOWDHURY H, KORPTLPVA O. Realizability conditions for electromagnetic Gaussian Schell-model sources[J]. Optics Communications, 2005, 249(4): 379-385.
[16] JI J R. Advanced optics tutorial[M].Beijing: Science Press, 2007:261-267(in Chinese).
[17] DU X Y, ZHAO D M, KOROTKOVA O. Cross-spectral density matrix of a random electromagnetic beam propagating through an apertured axially nonsymmetrical optical system[J]. Physics Letters,2008,A372(22):4135-4140.
[18] DU X Y. Studies on the propagation and scattering of the vector or scalar light beams through the complicated optical systems and media[D]. Hangzhou: Zhejiang University, 2010: 24, 43-48, 73-85(in Chinese).
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