Germer Thomas A
Sensor Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
Opt Lett. 2020 Jan 15;45(2):483-486. Epub 2020 Jan 10.
It was recently demonstrated theoretically, when the polarimetric properties of a material depend only upon the direction transverse to that of propagation (long coherence length regime), depolarization in transmission evolves quadratically with material thickness. This behavior was observed in several experimental studies. However, some of these studies unlikely satisfy the long coherence length condition under which the theory applies. Here, we demonstrate that abandoning a unidirectional approach to the propagation of light through a medium, i.e., introducing scatter, causes quadratic depolarization to occur in the short coherence length regime.
最近有理论证明，当一种材料的偏振特性仅取决于与传播方向垂直的方向（长相干长度 regime）时，透射中的去极化随材料厚度呈二次方变化。这种行为在几项实验研究中被观察到。然而，这些研究中的一些不太可能满足该理论适用的长相干长度条件。在这里，我们证明，放弃光通过介质传播的单向方法，即引入散射，会导致在短相干长度 regime 中出现二次方去极化。
