冰洲石红外偏光棱镜设计及性能测量

Designing and Measuring of Calcite Infrared Polarization Prisms

国际上普遍采用的冰洲石偏光棱镜工作波长为2.4—2.9μ。根据对冰洲石红外偏光光谱及色散特性的研究,对格兰·汤普逊和格兰·泰勒型两种棱镜的参数进行特别设计后,将使用波段拓宽到5.1μ,本文给出两种红外偏光棱镜的设计参数及测试方法,并将测试结果与线栅式和布儒斯特角式红外偏光镜的参数进行了比较。

Emploied Wave-length of calcite polarization prisms generally used in the world is 0.24—2.9μ. After specially designed the parameters of Glan-Thompson and Glan-Taylor prisms, the applicable Wave-length can be extended to 5.10μ. The results of designing and measuring of the two types of prism are given, an -d compared with that of wire grid and Brewster types.