强度调制法测量Stokes矢量元素谱原理研究  

Study on the measurement principle of Stokes elements spectral based on intensity modulation

作　　者：宋志平[1,2] 洪津[1] 乔延利[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所通用光学定标与表征技术重点实验室,安徽合肥230031 [2]安徽大学物理与材料科学学院,安徽合肥230039

出　　处：《量子电子学报》2009年第3期268-271,共4页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金资助项目(60778023)

摘　　要：介绍了一种测量Stokes矢量元素谱的新方法。该方法通过在普通光谱仪的入射光路前端加上由两个延迟器和一个检偏器组成的调制器,只需一次测量即可解调得到目标的完整Stokes矢量元素谱,能有效解决传统偏振光谱信息获取方法存在的缺陷。给出了新方法实现完整Stokes矢量元素谱测量原理的数学推导,并用计算机数值模拟手段证明了该方法的可行性。A novel method measuring the Stokes elements spectral was proposed. The main idea of the method is that a modulator consisted by two retards and one polarizer is placed before the spectrometer and let the light under test go through the modulator to the spectrometer. Measuring the power spectral from the modulator only one time and executing the demodulation algorithm, the whole Stokes elements spectral from the light under test can be obtained. The disadvantages of the old methods can be removed completely by the new method. The principle for measuring the Stokes elements spectral based on the new method is deduced in detail and its feasibility is proved by the numerical simulation.

关 键 词：物理光学 偏振信息 Stokes矢量 强度调制 数值模拟 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置]