光学学报, 2018, 38 (7): 0729002, 网络出版: 2018-07-16
非均匀烟雾环境对偏振光传输特性的影响 下载: 1270次
Influence of Inhomogeneous Smog Environment on Transmission Characteristics of Polarized Light
散射 偏振 非均匀环境 烟雾介质 蒙特卡洛 沉降 传输特性 scattering polarization inhomogeneous environment smog medium Monte Carlo sedimentation transmission characteristics
摘要
针对由烟雾沉降现象产生的非均匀烟雾介质环境,利用蒙特卡洛仿真程序,并通过实时测量沉降时间内的光学厚度,建立了实验测试与模拟仿真中非均匀环境参数的联系,解决了传统非均匀环境中介质参数测量与偏振传输特性测量存在延时的问题,增加了测试的准确性。实验结果表明,4种偏振光的偏振度均随烟雾浓度的增大而减小;随着烟雾浓度的增大,圆偏光表现出更好的保偏特性;波长越长圆偏光的偏振特性越显著,波长越短线偏振光的偏振特性越显著。
Abstract
As for the inhomogeneous smog environment caused by the sedimentation phenomenon of smog, the relations of inhomogeneous environment parameters in the experiment and the simulation are established by the usage of the Monte Carlo simulation procedure and the real-time measurement of the optical depth during the sedimentation time, which solves the delay problem in the measurements of the polarization transmission characteristics and the medium parameters in the traditional inhomogeneous environment and the measurement accuracy is also enhanced. The experimental results show that, with the increase of the concentration of the smog, all the degrees of polarization of the four kinds of polarized lights are constantly decreased; the circularly polarized light has a better polarization-maintaining characteristic with the increase of the concentration of the smog;the longer the wavelength is, the better the polarization characteristic of the circularly polarized light is;the shorter the wavelength is, the better the polarization characteristic of the linearly polarized light is.
张肃, 战俊彤, 付强, 段锦, 姜会林. 非均匀烟雾环境对偏振光传输特性的影响[J]. 光学学报, 2018, 38(7): 0729002. Zhang Su, Zhan Juntong, Fu Qiang, Duan Jin, Jiang Huilin. Influence of Inhomogeneous Smog Environment on Transmission Characteristics of Polarized Light[J]. Acta Optica Sinica, 2018, 38(7): 0729002.