弹光调制器准单色光波偏振测量与仿真  

Photoelastic Modulator Monochromatic Wave Polarization Measurement and Simulation

作　　者：高婷婷[1,2] 韩慧莲[1] 张瑞[2] 马志飞[3] 

机构地区：[1]中北大学电子测量技术国家重点实验室,太原030051 [2]中北大学信息与通信工程学院,太原030051 [3]中北大学机电工程学院,太原030051

出　　处：《光散射学报》2013年第4期403-409,共7页The Journal of Light Scattering

基　　金：国家自然科学基金仪器专项基金(611127015);国家自然科学基金项目(61040062);国际科技合作项目(S2012ZR0247);国际科技部合作项目

摘　　要：弹光调制器(Photoelastic Modulator,PEM)互差频调制的新型偏振测量方法,能够同时实现三个斯托克斯光谱偏振参数测量,克服了现有方法的无法用阵列探测器有效采集,调制频率高的缺点,保留了原有弹光调制器偏振测量的优点。文章以光学系统的准单色光的偏振特性以及常用的偏振分析方法为基础,引入了Stokes矢量来表示入射光波的偏振特性。分析了弹光调制器实现偏振测量新方法的原理,利用三个弹光调制器工作在互相差异的频率上,对偏振光进行差频调制,产生载有偏振信息的低频分量,再通过锁相放大即可得到偏振信息,并给出利用MATLAB模拟仿真实现Stokes参量复原的过程。理论分析及仿真结果证明了该方法在理论上的可行性。Photoelastic Modulator mutual difference frequency modulation of new polariza- tion measurement method can realize three stokes spectrum polarization parameters meas- urement, overcomes that the existing methods can＇t use array detector effective collection and modulation frequency high faults and Retains the advantages of the original play of light modulator polarization measurement. This chapter is based on polarization properties and General polarization analysis method of optical system of monochromatic, Stokes vec- tor is introduced to represent the polarization of the incident light wave characteristics. A- nalysis Photoelastic modulator for polarization works, Three photoelastic modulators work on the mutual difference frequency, polarized light is modulated to the difference frequen- cy,polarization information is contained in the low-frequency component and via phase- locked amplification can get polarized information. This paper proposed by MATLAB sim- ulation realization Stokes vector recovery process. Theoretical analysis and simulation re- sults show that the method in the theoretical feasibility.

关 键 词：弹光调制器 Stokes矢量 偏振测量 差频调制 

分 类 号：O436.3[机械工程—光学工程]