Charnotskii Mikhail
J Opt Soc Am A Opt Image Sci Vis. 2016 Jul 1;33(7):1385-94. doi: 10.1364/JOSAA.33.001385.
A parabolic equation for electromagnetic wave propagation in a random medium is extended to include the depolarization effects in the narrow-angle, forward-scattering setting. Closed-form parabolic equations for propagation of the coherence tensor are derived under a Markov approximation model. For a general partially coherent and partially polarized beam wave, this equation can be reduced to a system of ordinary differential equations, allowing a simple numeric solution. An analytical solution exists for statistically homogeneous waves. Estimates based on the perturbation solution support the common knowledge that the depolarization at the optical frequencies is negligible for atmospheric turbulence propagation. These results indicate that the recently published theory [Opt. Lett.40, 3077 (2015)10.1364/OL.40.003077] is not valid for atmospheric turbulence.
一个用于描述电磁波在随机介质中传播的抛物型方程被扩展到窄角前向散射情形，以包含去极化效应。在马尔可夫近似模型下，推导了相干张量传播的闭式抛物型方程。对于一般的部分相干和部分偏振光束波，该方程可简化为常微分方程组，从而得到简单的数值解。对于统计均匀波存在解析解。基于微扰解的估计支持了一个常识，即在大气湍流传播中，光频下的去极化可忽略不计。这些结果表明，最近发表的理论[Opt. Lett.40, 3077 (2015)10.1364/OL.40.003077]对大气湍流不成立。
