傅里叶变换光谱仪中干涉信号的畸变  

Distortion of the Interferometric Signal in the Fourier Transform Spectrometer

作　　者：吴航行[1] 华建文[1] 王培纲[1] 王模昌[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《红外技术》2004年第4期25-30,共6页Infrared Technology

摘　　要：简要论述了傅里叶变换光谱仪的测量原理,详细说明了几种产生干涉信号畸变的原因,分析了它们在干涉图上的具体表现,并在计算机上仿真得到相应的畸变干涉信号。另一方面,利用一台自行研制的环境适应性相当好的傅里叶变换光谱仪,观察到了与前面所论述的畸变相接近的干涉图,从而验证了分析结论的正确性。由此可见,自行研制的傅里叶变换光谱仪尽管方案正确、性能优越,但还需要在许多方面作相应的改进。In this paper, the principle of Fourier transform spectrometer (FTS) is introduced, some systematic errors are described which distort the interferometric signal and the corresponding characteristics in the interferograms are analyzed in detail. Then the computer simulation is given. On the other hand, with the robust FTS built by our own, which is insensitive to environmental interference, we observed the distorted interferometric signal just as given by the simulation. So the analysis is justified, and the conclusion is got that our FTS needs improvements though it is well designed and robust.

关 键 词：傅里叶变换光谱仪 干涉图 相位畸变 光程差 光谱分辨率 

分 类 号：TH744.1[机械工程—光学工程]