补偿调整式激光椭圆起偏器可调性及实现  

Adjustability and Realization of Compensation Adjustment Type Laser Elliptic Polarizer

作　　者：宋连科[1] 牛明生[1] 韩培高[1] 郝殿中[1] 马丽丽[1] 

机构地区：[1]曲阜师范大学激光研究所山东省激光偏光与信息技术重点实验室,山东曲阜273165

出　　处：《中国激光》2015年第1期246-252,共7页Chinese Journal of Lasers

基　　金：国家自然科学基金(1110461,11104160)

摘　　要：椭圆偏振器是一种非常重要的偏振态调制器件。采用线偏器与波片组合方式设计，通过各部件间方位的补偿调整来满足不同波长或椭偏度的需求，波长调整范围大，输出状态稳定，具有较高的实用价值。由偏光矩阵和邦加球理论可知，器件间方位、相位以及波长间存在着规律性关系，匹配相关条件能够影响不同波长下的偏振光状态。此设计由一个宽频透射的偏光棱镜和两个完全一致的“零级”波片组成。棱镜保证了入射光偏振方向的稳定性，波片承担了波长的选择和椭偏度的改变。研究表明材料特性限制了应用范围。云母波片设计的应用波长范围为300～1400 nm，连续调整波长范围700 nm。The elliptical polarizer, which is designed using linear polarizer and wave plate combination, is a very important polarization modulation device. It can meet the need of the different wavelengths or ellipticity angle through the orientation compensation and adjustment of the various components. And it has high practical value as it has wide wavelength tuning range and the stability output state. According to the elliptic matrix and Poincare Sphere Theory, there exist regular relationship among the devices′ orientation, phase and the wavelength. The different wavelength polarization state is affected by the matching condition. This design consists of a broadband transmission polarizing prism and two identical zero order plates. The prism can ensure the stability polarization direction of the incident light and, the wave plate can select the wavelength and change the ellipticity angle. The results show that the material properties limit the application range of the elliptical polarizer. The designed mica wave plate, whose continuous adjustable range is 700 nm, can be applied in the range of 300 ~1400 nm.

关 键 词：光学器件 偏振光学 椭圆起偏器 偏振光 波片 

分 类 号：O433.5[机械工程—光学工程]