摘要
根据偏振度测量原理推导了相干矩阵中各个参数的测量公式,主要是复参量的实部与虚部.基于Mach-Zehnder干涉装置搭建了散射体偏振度测试平台,并对同一粒径不同浓度散射体的偏振特性进行了测试.结果表明:浓度为0.00625%的聚苯乙烯(Polystyrene,PS)散射介质光散射较弱,偏振度值高达0.992,散射体具有良好的保偏特性;随着聚苯乙烯散射介质浓度增大到0.025%,光散射增强,偏振度值降至0.545,散射体的退偏效果显著.
In this paper,the measurement formula of each parameter in the coherent matrix is derived according to the principle of polarization measurement,which is mainly the real part and the imaginary part of the complex parameter.Based on the Mach-Zehnder interference,the platform is built to measure the degree of polarization of the scatterers,at which the polarization properties of the scatterers of the same particle size and different concentrations are tested.The experimental results show that the light scattering of the polystyrene medium with a concentration of 0.00625%is weak,and the value of the degree of polarization is as high as 0.992,and the scatterers has good polarization-maintaining properties.As the concentration of the polystyrene scattering medium increased to 0.025%,the light scattering was enhanced.When the value of the degree of polarization decreased to 0.545,the depolarization effect of the scatterers was remarkable.The measurement method and device provide an idea for directly measuring the degree of polarization by using a coherence matrix.
作者
徐美芳
张敏娟
王浩全
XU Meifang;ZHANG Minjuan;WANG Haoquan(Engineering and Technology Research Center of Shanxi Provincial for Optical-Electric Information and Instrument,North University of China,Taiyuan Shanxi 030051,China;School of Information and Communication Engineering,North University of China,Taiyuan Shanxi 030051,China)
出处
《新疆大学学报（自然科学版）（中英文）》
CAS
2023年第1期57-60,共4页
Journal of Xinjiang University(Natural Science Edition in Chinese and English)
基金
国家自然科学基金“弹光调制干涉仪稳定控制及快速光谱重建方法研究”(61505180)
山西省自然科学基金“基于相控聚集阵列的光声层析成像技术研究”(201801D121160)
“气溶胶散射单站红外目标被动测距技术研究”(201901D111145).
