格兰-傅科棱镜空气隙厚度的测量  

Measurement of air-gap thickness of Glan-Foucault prisms

作　　者：孟祥省[1] 王涛[1] 吴福全[2] 马丽丽[2] 

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

出　　处：《激光技术》2010年第3期413-416,共4页Laser Technology

摘　　要：为了测量格兰．傅科空气隙的厚度，采用分析棱镜空气隙中光的干涉方法，分析了棱镜对单模高斯光束的影响。由分析可知，透射光束随光束在棱镜端面上的入射角变化呈现周期性的振荡，且振荡特性与入射光的波长、光强分布特性、棱镜结构角及空气隙的厚度有关。对于给定波长的入射单模高斯光束，由于棱镜的结构角在棱镜胶合之前可以精确测得，故通过分析这种振荡特性便可以得出棱镜空气隙的厚度，并对成品棱镜空气隙厚度进行了测量。结果表明，使用该方法可以精确测出空气隙的厚度，测量精度为10^-4mm。In order to measure the air-gap thickness of Glan-Foucault prisms, after analyzing the light interference in the air-gap of the prisms, the effect of prisms on single-mode Gaussian beam was obtained. It is shown that the translated beam oscillate with the changing of incident angles, and the characteristics of the oscillation relate to the incident light wavelength, the beam intensity distribution characteristics, the prism structure angle and the air-gap thickness. For single-mode Gaussian beam at a certain wavelength, because the structure angle could be measured exactly before the prism was agglutinated, the air-gap thickness can be obtained by analyzing the characteristics of the oscillation. Hereby, the experimentation was designed, and the finished prism air-gap thickness was measured at an accuracy of 10-4mm.

关 键 词：测量与计量 偏光棱镜 高斯光束 干涉 

分 类 号：O436.3[机械工程—光学工程]