Hokr Brett H, Bixler Joel N, Elpers Gabriel, Zollars Byron, Thomas Robert J, Yakovlev Vladislav V, Scully Marlan O
Opt Express. 2015 Apr 6;23(7):8699-705. doi: 10.1364/OE.23.008699.
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.
蒙特卡罗技术是研究光在混浊介质中传播的金标准。传统的蒙特卡罗技术无法考虑诸如衍射等波动效应；因此，这些方法不适用于探索焦平面上仍存在显著弹道分量的聚焦几何结构。在此，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，直到它们经历首次散射事件，此后，再通过传统蒙特卡罗技术在介质中传播来实现的。通过在现有的蒙特卡罗实现基础上解决已知问题，使得该方法能够轻松地在各种现有的蒙特卡罗模拟中实现，极大地提高了那些用于研究聚焦几何结构中动力学的模型的准确性。
