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Analytic framework for understanding the competing multiple light scattering processes

机译:理解竞争多光散射过程的分析框架

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In many complex physical phenomena such as wave propagation in scattering media, the process of interest often cannot be easily distinguished from other processes because only the total combined process is accessible. This makes it difficult to extract the precise knowledge of each subprocess. Here, we derive an analytic expression describing the way the eigenchannel coupling of the total process distributes its energy to the individual subprocesses, with only partial information on each subprocess such as the average eigenvalue 〈τ〉 and enhancement factor η. We found that the ratio of (η?-?1)〈τ〉 between two subprocesses is a critical parameter determining the preferable subprocess in the energy coupling. This work provides a new analytic framework for understanding the effect of wavefront shaping in the control of wave propagation in disordered media.
机译:在许多复杂的物理现象(如散射介质中的波传播)中,感兴趣的过程通常不能容易地与其他过程区分开,因为只能访问总组合过程。这使得难以提取每个子过程的精确知识。这里,我们得出了描述了对总处理的Eigench annel耦合的方式将其能量分配给各个子过程的方式,只有关于每个子过程的部分信息,例如平均特征值<τ>和增强因子η。我们发现,两个子过程之间的(η≤1)<τ>的比率是确定能量耦合中优选的子处理的关键参数。这项工作提供了一种新的分析框架,用于了解波前塑造在无序介质中波传播控制中的影响。

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