Del Guasta Massimo, Vallar Edgar, Riviere Olivier, Castagnoli Francesco, Venturi Valerio, Morandi Marco
Istituto Fisica Applicata Nello Carrara (IFAC), Consiglio Nazionale delle Ricerche, Florence, Italy.
Appl Opt. 2006 Jul 10;45(20):4878-87. doi: 10.1364/ao.45.004878.
A polarization lidar operating at 532 nm was converted into an automatic, polarimetric lidar capable of measuring the entire Stokes vector of backscattered light and its derived quantities. Among these quantities, circular and linear depolarizations were studied as tools for investigating the presence of anisotropic scattering media. Isotropic scatterers show a simple relationship between linear and circular depolarization, a relation that we confirm theoretically and experimentally. Deviations from this relation, which are possible in the presence of anisotropic scatterers such as horizontally oriented ice plates when they are observed with a slant lidar, were studied both numerically and experimentally.
一台工作在532纳米的偏振激光雷达被改造成了一台能够测量后向散射光的完整斯托克斯矢量及其派生量的自动偏振激光雷达。在这些量中，圆偏振和线偏振退偏被作为研究各向异性散射介质存在的工具进行了研究。各向同性散射体在直线偏振退偏和圆偏振退偏之间呈现出一种简单的关系，我们通过理论和实验证实了这种关系。当用倾斜激光雷达观测时，在存在诸如水平取向冰板这样的各向异性散射体的情况下，可能会出现偏离这种关系的情况，我们对此进行了数值和实验研究。
