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Modeling of femtosecond pulse propagationthrough dense scattering media

机译：飞秒脉冲传播的建模密集散射媒体

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The aim of this work is to contribute to a better determination of the optical parameters for dense scattering media. Westudy the interaction of femtosecond polarized light pulse with a scattering medium considering Monte Carlo simulation.The Monte Carlo scheme is based on temporal photon tracking, including a pseudo Monte Carlo approximationassociated to two small detectors in forward and backward directions. The statistical scattering properties are derivedfrom temporal phase matrices, which are evaluated through a scanning of frequency associated to the Lorenz-Mie theory. We specially focused our attention on solid rocket motor modelling. In such scattering medium, large optical thickness,various bimodal particle size distributions and concentration gradients could be observed. Moreover, such media consistsin a suspension of big particles (typically 100 gm diameter). The understanding of the scattering process of such particlesneeds the introduction of Debye modes. We will explain the contribution of these modes and give an example with anumerical application.
机译：这项工作的目的是有助于更好地确定密集散射介质的光学参数。考虑Monte Carlo仿真的散射介质的飞秒偏振光脉冲的威胁。蒙特卡罗方案基于时间光子跟踪，包括近蒙特卡罗在向前和向后方向上的两个小探测器分配到两个小探测器。统计散射特性是从时间相位矩阵导出的，通过扫描与Lorenz-Mie理论相关的频率进行评估。我们专注于我们的注意力对固体火箭电机建模。在这种散射介质中，可以观察到大的光学厚度，各种双峰粒度分布和浓度梯度。此外，这种介质在悬浮颗粒（通常为100克直径）的悬浮液中。对这种粒子的散射过程的理解引入德拜德模式。我们将解释这些模式的贡献，并给出一个具有多余应用的示例。

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