摘要
为了验证空气隙的厚度是否对偏光棱镜的透射比产生影响,对格兰-泰勒棱镜和格兰-付科棱镜的透射比进行了详细的理论分析,并利用UV-3101分光光度计分别对两只格兰-泰勒棱镜和两只格兰-付科棱镜的透射比进行了实验测试,发现格兰-泰勒棱镜的透射比(85%左右)明显高于格兰-付科棱镜(50%左右)。理论分析表明,对于严格的准直光束,两种棱镜的透射比均随波长的变化而振荡,且这种振荡对格兰-付科棱镜强于格兰-泰勒棱镜;但在分光光度计上的测试并未出现振荡,这说明对于非严格准直的光束,空气隙的厚度并不影响棱镜的透射比。
In order to verify whether the thickness of air-gap would influence the prism＇s transmittance ,the transmittance of Glan-Taylor prism and Glan-Faucault prism is theoretically studied. The transmittance of two-Glan-Taylor prisms and two-GlanFaucauh prisms is tested with a UV-3101 spectral photometer, and the results are found the transmittance of Glan-Taylor prism （ about 85% ） is obviously higher than that of Glan-Faucault prism（ about 50% ）. For strictly collimating light,the transmittance of these two types of prism varies with the wavelength change, and this vibration is stronger for Glan-Faucauh prism than for GlanTaylor prism. However, the experimental result tested by spectral photometer doesn＇t have vibration, which shows that for nonstrictly collimating light, the thickness of air-gap doesn＇t influence the prism＇s transmittance.
出处
《激光技术》
CAS
CSCD
北大核心
2006年第2期215-217,共3页
Laser Technology
关键词
物理光学
偏振光
格兰棱镜
透射比
干涉
physical optics
polarized light
Glan prism
transmittance
interference
