Polarized light propagation through scattering media: time-resolved Monte Carlo simulations and experiments.
Polarized light propagation through scattering media: time-resolved Monte Carlo simulations and experiments.
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DOI：
10.1117/1.1606462
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发表时间：
2003-10
影响因子：
3.5
通讯作者：
Xueding Wang;Lihong V. Wang;Chia-Wei Sun;Chih-Chung Yang
中科院分区：
文献类型：
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作者：
Xueding Wang;Lihong V. Wang;Chia-Wei Sun;Chih-Chung Yang
本文研究了偏振光通过聚苯乙烯微球溶液随机散射介质的透射特性。斯托克斯矢量和偏振度的时间分布的实验测量和理论计算的基础上的Monte Carlo技术。实验结果与理论结果吻合较好，表明时间分辨蒙特卡罗技术是一种有助于理解生物组织中偏振传播的有力工具。基于Stokes-Mueller形式主义和Mie理论的分析表明，第一散射事件决定了传输的Stokes矢量的主要空间模式。当在混浊介质的输出表面处检测到的区域关于入射光束圆对称时，透射光的时间分布与入射偏振状态无关。散射体的平均阶数与光传播时间之间的线性关系可以用来解释透射光偏振度的指数衰减。
A study of polarized light transmitted through randomly scattering media of a polystyrene-microsphere solution is described. Temporal profiles of the Stokes vectors and the degree of polarization are measured experimentally and calculated theoretically based on a Monte Carlo technique. The experimental results match the theoretical results well, which demonstrates that the time-resolved Monte Carlo technique is a powerful tool that can contribute to the understanding of polarization propagation in biological tissue. Analysis based on the Stokes-Mueller formalism and the Mie theory shows that the first scattering event determines the major spatial patterns of the transmitted Stokes vectors. When an area detected at the output surface of a turbid medium is circularly symmetrical about the incident beam, the temporal profile of the transmitted light is independent of the incident polarization state. A linear relationship between the average order of the scatters and the light propagation time can be used to explain the exponential decay of the degree of polarization of transmitted light.