Modeling focusing Gaussian beams in a turbid medium with Monte Carlo simulations
Modeling focusing Gaussian beams in a turbid medium with Monte Carlo simulations
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DOI：
10.1364/oe.23.008699
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发表时间：
2015-04-06
期刊：
影响因子：
3.8
通讯作者：
Scully, Marlan O.
中科院分区：
文献类型：
--
作者：
Hokr, Brett H.;Bixler, Joel N.;Scully, Marlan O.
蒙特卡罗技术是研究光在混浊介质中传播的金标准。传统的蒙特卡罗方法不能包括波的影响，如绕射；因此，这些方法不适合探索聚焦几何，其中重要的弹道分量保持在焦平面上。在这里，提出了一种在传统蒙特卡罗模拟的背景下，精确模拟焦平面上的光子传播的方法。这是通过沿高斯光学预测的轨迹传播弹道光子直到它们经历初始散射事件，之后它们通过传统的蒙特卡罗技术传播通过介质来实现的。通过在现有蒙特卡罗实现的基础上解决已知问题，使得该方法可以很容易地在各种现有的蒙特卡罗模拟中实现，从而极大地提高了那些用于研究聚焦几何中的动力学的模型的精度。(C)2015年美国光学学会
Monte Carlo techniques are the gold standard for studying light propagation in turbid media. Traditional Monte Carlo techniques are unable to include wave effects, such as diffraction; thus, these methods are unsuitable for exploring focusing geometries where a significant ballistic component remains at the focal plane. Here, a method is presented for accurately simulating photon propagation at the focal plane, in the context of a traditional Monte Carlo simulation. This is accomplished by propagating ballistic photons along trajectories predicted by Gaussian optics until they undergo an initial scattering event, after which, they are propagated through the medium by a traditional Monte Carlo technique. Solving a known problem by building upon an existing Monte Carlo implementation allows this method to be easily implemented in a wide variety of existing Monte Carlo simulations, greatly improving the accuracy of those models for studying dynamics in a focusing geometry. (C) 2015 Optical Society of America