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Propagation factor of partially coherent radially polarized vortex beams in anisotropic turbulent atmosphere
Journal of the Optical Society of America A ( IF 1.9 ) Pub Date : 2021-08-06 , DOI: 10.1364/josaa.430879
Liang Zhao , Ying Xu , Ning Yang , Yonggen Xu , Youquan Dan

We skillfully combined the cosine theorem with the second moment theory and the Wigner distribution function and derived the analytical expressions of the propagation factor (${M^2}$-factor) of a partially coherent radially polarized vortex beam (PCRPVB) in atmospheric turbulence. Then, we comparatively studied the propagation factors of a PCRPVB and a partially coherent electromagnetic vortex beam (PCEVB) in atmospheric turbulence. The results show that a PCRPVB has a smaller value of a relative ${M^2}$-factor than a PCEVB, which means that a PCRPVB has a stronger ability to resist atmospheric turbulence than a PCEVB. To confirm our theoretical studies, the hyperbolic fitting method is combined with the random phase screen (RPS) to simulate the ${M^2}$-factor of a PCRPVB and a PCEVB through atmospheric turbulence. The study results indicate that the theoretical values agree well with the simulated values. Our results may find applications in free-space optical communications and remote sensing.

中文翻译:

各向异性湍流大气中部分相干径向极化涡旋光束的传播因子

我们巧妙地将余弦定理与二阶矩理论和Wigner分布函数相结合,推导出了大气湍流中部分相干径向极化涡旋光束(PCRPVB)的传播因子(${M^2}$- factor)的解析表达式. 然后,我们比较研究了大气湍流中 PCRPVB 和部分相干电磁涡旋光束 (PCEVB) 的传播因子。结果表明,PCRPVB的相对${M^2}$- factor值比PCEVB小,这意味着PCRPVB比PCEVB具有更强的抗大气湍流能力。为了证实我们的理论研究,双曲线拟合方法与随机相位屏幕 (RPS) 相结合来模拟${M^2}$- PCRPVB 和 PCEVB 通过大气湍流的因子。研究结果表明,理论值与模拟值吻合良好。我们的结果可能会应用于自由空间光通信和遥感。
更新日期:2021-09-01
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