Schmitt J M, Gandjbakhche A H, Bonner R F
Appl Opt. 1992 Oct 20;31(30):6535-46. doi: 10.1364/AO.31.006535.
We describe a method for discriminating short- and long-path photons transmitted through a multiply scattering medium that is based on the relationship between the polarization states of the incident and forward-scattered light. Results of Monte Carlo simulations and experiments show that if the scattering anisotropy of the scatterers is sufficiently small, absorbing barriers embedded in optically dense suspensions of polystyrene spheres can be resolved with good contrast by selectively detecting a component of the scattered-light intensity that has preserved its incident circular polarization state.
The principles of operation of a polarization-modulation system capable of measuring small polarization fractions are explained. Using this system we were able to measure polarized light in a depolarized background over 1000 times as large.
我们描述了一种基于入射光和前向散射光偏振态之间的关系来区分通过多重散射介质传输的短程和长程光子的方法。蒙特卡罗模拟和实验结果表明，如果散射体的散射各向异性足够小，通过选择性地检测保持其入射圆偏振态的散射光强度分量，可以以良好的对比度分辨嵌入聚苯乙烯球体光学致密悬浮液中的吸收屏障。
解释了一种能够测量小偏振分数的偏振调制系统的工作原理。使用该系统，我们能够在比其大1000倍以上的去偏振背景中测量偏振光。
