空气隙偏光镜空气层厚度的优化设计  

Optimum thickness of air gap of air-spaced polarizing prism

作　　者：马建玲[1] 李国华[2] 

机构地区：[1]泰山学院物理系,泰安271021 [2]曲阜师范大学激光研究所,曲阜273165

出　　处：《激光技术》2005年第1期72-73,共2页Laser Technology

摘　　要：棱镜偏光镜的空气隙对其透射比同样具有影响,对空气隙的厚度进行优化设计对提高棱镜的透射比很具实际意义。以格兰 泰勒棱镜为例,利用菲涅耳公式和多光束干涉理论,给出空气隙棱镜e光透射比的计算公式,分析了e光透射比随其空气隙厚度的变化规律,提出了为提高透射比棱镜空气隙厚度的最佳取值,从而实现棱镜的优化设计。The air gap of polarization prism is influential to the transmissivity of this type of polarizer.Optimized design of the thickness of air gap is very useful to improve e-ray transmission in polarization prism.By means of the Glan-Taylor prism,based on the theory of Fresnel formula and multiple-beam interference,the calculation formulum of e-ray transmissivity in air-spaced prism is put forward.The law of the e-ray transmissivity varing with the air gap thickness is analyzed so that the optimum air gap thickness can be obtained to design an optimum polarizing prism.

关 键 词：偏光镜 透射比 空气隙 多光束干涉 

分 类 号：O734[理学—晶体学]