用于平行分束偏光镜剪切差调整的缩·扩束棱镜设计  

Design of polarizer which can scaling or blooming the parallel beam splitter's shear difference

作　　者：郑萌萌[1] 吴福全[1] 毕佳[1] 刘在国[2] 

机构地区：[1]曲阜师范大学激光研究所,山东曲阜273165 [2]曲阜师范大学物理工程学院,山东曲阜273165

出　　处：《激光杂志》2007年第2期24-25,共2页Laser Journal

摘　　要：本文利用光通过平行界面的均匀介质时会发生光束平移的原理,设计了一种以普通光学玻璃为材料,用于调整平行分束偏光镜出射光束间距的新型棱镜。通过推导,得出了出射光束间距和入射光束间距的扩.缩束比κ和棱镜参数(折射率n、结构角α、边长a)之间的关系公式,以及棱镜的结构公式;并结合o光和e光通过棱镜有不同的透射比,给出了能有效地对平行分束偏光棱镜的剪切差进行调制的棱镜最佳设计:选取折射率较大的材料,结构角α的取值范围是40°～55°。This article produced a new design of polarizer, made of optical glass, which can scaling or blooming the parallel beam splitter＇ s shear difference, which is on the base of the beam combination when the light passed the parallel dielectric. The authors derived the relation of the ratio of scaling to blooming of the beam and the parameters tithe prism （refractive index n; structural angle α and the length tithe prism a）, as well as the design formula tithe prism. By comparing the different transmittance of the e - beam and the o - beam when the light passed the parallel dielectric, the authors carried out the optimum design： if given the bigger refractive index materials, the available scan of the structural angle a will be 40°- 55°.

关 键 词：偏振光学 平行分束偏光镜 光束平移 剪切差 透射比 

分 类 号：O436.3[机械工程—光学工程]