Propagation of polarized light in birefringent turbid media: a Monte Carlo study.
Propagation of polarized light in birefringent turbid media: a Monte Carlo study.
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DOI：
10.1117/1.1483315
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发表时间：
2002-07
影响因子：
3.5
通讯作者：
Xueding Wang;Lihong V. Wang
中科院分区：
文献类型：
--
作者：
Xueding Wang;Lihong V. Wang
本文基于蒙特卡罗算法对偏振光在双折射混浊介质中的传播进行了详细的研究。纤维结构引起的线性双折射改变了单次散射矩阵，改变了光子在生物组织中传播的偏振态。与非双折射各向同性混浊介质相比，双折射各向异性混浊介质后向散射光的某些Mueller矩阵元呈现出不寻常的强度模式。这一结果与基于双散射模型的解析结果吻合得很好。基于数值结果和理论分析，讨论并比较了偏振度、斯托克斯参数和漫反射率作为线性双折射参数的函数，以了解偏振光在纤维组织中传播的基本物理过程。
A detailed study, based on a Monte Carlo algorithm, of polarized light propagation in birefringent turbid media is presented in this paper. Linear birefringence, which results from the fibrous structures, changes the single scattering matrix and alters the polarization states of photons propagating in biological tissues. Some Mueller matrix elements of light backscattered from birefringent anisotropic turbid media present unusual intensity patterns compared with those for nonbirefringent isotropic turbid media. This result is in good agreement with the analytic results based on the double-scattering model. Degree of polarization, Stokes parameters, and diffuse reflectance as functions of linearly birefringent parameters based on numerical results and theoretical analysis are discussed and compared in an effort to understand the essential physical processes of polarized light propagation in fibrous tissues.