冰洲石-玻璃组合平行分束偏光镜的设计研究  

Design of parallel beam-splitting Nicol prism with combination of Iceland spar and glass

作　　者：任树锋[1] 徐兴磊[1] 张运海[1] 吴福全[2] 

机构地区：[1]菏泽学院物理系 [2]曲阜师范大学激光研究所,山东曲阜273165

出　　处：《应用光学》2007年第3期297-300,共4页Journal of Applied Optics

基　　金：菏泽学院自然科学基金资助课题(XY05WL01)

摘　　要：为了既节省稀有昂贵的冰洲石晶体材料,又实现偏振光的大剪切差输出,采用冰洲石晶体与光学玻璃组合的方法,设计了一种新型平行分束偏光镜。该棱镜的前后半块分别为ZBaF3玻璃和冰洲石晶体,由大折射率液态胶合剂溴代萘胶合而成。实验测试表明:该棱镜透射的2束平行光的消光比,o光可达1-0 5;尽管受到光学玻璃的影响,e光的消光比仍优于1-0 3;透射比均与纯冰洲石晶体材料的棱镜基本相当。理论分析表明:该棱镜自身结构带来的性能影响在一定情况下完全可以忽略,因此具有较好的应用前景。A new type of parallel beam-splitting Nicol prism made with the combination of iceland crystal and glass is designed so as to save the rare Iceland spar and increase the shear difference of polarized light. The prism is made of ZBaF3 glass and Iceland spar glued with C10H7Br, which has high refractive index. The experiment shows the extinction ratio of o light is better than 10 ^-5, that ofelight is better than 10^-3 althoughit is influenced by the optical glass, and the transmittance of the combination is basically the same as that of the pure Iceland spar prism. The theoretical analysis indicates that the influence of the prism structure on the performance can be neglected in some specific cases and it will have a good application potential.

关 键 词：平行分束偏光镜 剪切差 光学玻璃 消光比 

分 类 号：O436.3[机械工程—光学工程]