Effect of astigmatism on states of polarization of aberrant stochastic electromagnetic beams in turbulent atmosphere.
Effect of astigmatism on states of polarization of aberrant stochastic electromagnetic beams in turbulent atmosphere.
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DOI：
10.1364/josaa.26.002121
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发表时间：
2009-10
期刊：
影响因子：
--
通讯作者：
Jia Li;Yan-ru Chen;Qi Zhao;Muchun Zhou
中科院分区：
文献类型：
--
作者：
Jia Li;Yan-ru Chen;Qi Zhao;Muchun Zhou
研究了湍流大气中像散对畸变随机电磁光束偏振态的影响。利用高斯-谢尔模型的像散光源，导出了偏振度、取向角和偏振度椭圆的解析表达式。分析结果表明，不同强度的像散对偏振态的影响不同。当光源的折射系数足够大时，大气湍流和自由空间衍射现象对偏振态的影响很小。推导并讨论了偏振不变传播的充分条件。
The effect of astigmatism on states of polarization of aberrant stochastic electromagnetic beams in turbulent atmosphere is investigated. Using the Gaussian-Schell model source with astigmatism, the analytical formula for the degree of polarization, the orientation angle, and the degree of polarization ellipse are derived. Analytical results show that different strengths of astigmatism have different effects on states of polarization on propagation. It is also shown that when the astigmatic coefficient of sources is large enough, states of polarization are hardly affected by atmospheric turbulence and the free-space diffraction phenomenon. The sufficient conditions for propagating with invariant polarization are derived and discussed.