Analysis of light propagation in highly scattering media by path-length-assigned Monte Carlo simulations
Analysis of light propagation in highly scattering media by path-length-assigned Monte Carlo simulations
复制标题
通过路径长度分配蒙特卡罗模拟分析高散射介质中的光传播
DOI：
10.1007/s10043-014-0030-0
复制
发表时间：
2014
期刊：
影响因子：
1.2
通讯作者：
T. Iwai
中科院分区：
文献类型：
--
作者：
K. Ishii;I. Nishidate;T. Iwai
当光正常入射到表面并从同一点向后重新出现时，研究高散射介质中光学传播的数值分析。这种情况对应于实际的光散射设置，例如光学相干断层扫描。模拟采用基于椭球算法的路径长度分配蒙特卡罗方法。确定了散射光的空间分布，并找到了其宽度和穿透深度对路径长度的依赖性。反向散射光分为三种类型，其中弹道光子、蛇光子和漫射光子占主导地位。
Numerical analysis of optical propagation in highly scattering media is investigated when light is normally incident to the surface and re-emerges backward from the same point. This situation corresponds to practical light scattering setups, such as in optical coherence tomography. The simulation uses the path-length-assigned Monte Carlo method based on an ellipsoidal algorithm. The spatial distribution of the scattered light is determined and the dependence of its width and penetration depth on the path-length is found. The backscattered light is classified into three types, in which ballistic, snake, and diffuse photons are dominant.