Macdonald Callum M
J Opt Soc Am A Opt Image Sci Vis. 2018 Dec 1;35(12):2104-2110. doi: 10.1364/JOSAA.35.002104.
We investigate the effectiveness of various bulk optical parameters in characterizing the degree of circular polarization (DOCP) of light diffusely reflected from scattering media. It is demonstrated that the traditional set of bulk optical parameters (namely, the scattering and absorption coefficients and the scattering asymmetry parameter) fail to characterize the observed depolarization. However, we find that there exists an additional parameter connected to the circular polarization memory phenomenon that consistently relates to observations, even in media with widely varying refractive indices and particle size distributions. This relationship is demonstrated using both Monte Carlo simulations and a new method for designing microsphere-based phantom media, which contain carefully controlled particle size distributions and depolarization characteristics.
我们研究了各种体光学参数在表征从散射介质漫反射光的圆偏振度（DOCP）方面的有效性。结果表明，传统的体光学参数集（即散射系数、吸收系数和散射不对称参数）无法表征所观察到的去极化现象。然而，我们发现存在一个与圆偏振记忆现象相关的附加参数，即使在折射率和粒径分布差异很大的介质中，该参数也始终与观测结果相关。使用蒙特卡罗模拟和一种设计基于微球的体模介质的新方法证明了这种关系，该体模介质包含精心控制的粒径分布和去极化特性。
