光线通过傅里叶变换红外光谱仪的光程差分析  

Analysis of Optical Path Difference of a Ray Passing through FTIR

作　　者：廖腊梅[1] 贺健[2] 张庆国[2] 

机构地区：[1]洛阳师范学院物理与电子信息学院,河南洛阳471022 [2]河南科技大学物理与工程学院,河南洛阳471023

出　　处：《红外》2011年第12期14-16,38,共4页Infrared

基　　金：河南省教育厅自然科学基础研究项目(2008B140005;2010B140004)

摘　　要：为了研究光线通过傅里叶变换红外光谱仪的光程差,采用对称分析和几何光学方法分析了光线通过一个至三个平板时的光程表达式,并得出了一个光线通过任意多个平板时的光程的一般表达式。在此基础上,分析了核心部件——迈克耳逊干涉仪的两个臂产生的随入射角变化的光程差的精确表达式。最后给出了其广角条件。该研究对于广角傅里叶变换红外光谱仪的设计具有重要的参考意义。To study the optical path difference of a ray passing through a Fourier Transform infrared spectroscopy （FTIR）, the symmetric analysis and geometrical optics methods are used to analyze the optical path expression when the ray is passing through one to three plates and a general optical path expression when a ray is passing through arbitrary plates is derived. On the basis of above analysis, the accurate expression of the optical path difference reduced by two arms of a Michelson interferometer with respect to the incident angle is analyzed. Finally, the condition for field widening is given. This research is of great significance to the design of a wide field FTIR.

关 键 词：傅里叶变换红外光谱仪 光程差 迈克耳逊干涉仪 广角 

分 类 号：O433.1[机械工程—光学工程]