一、概述利用能产生高级次干涉的干涉仪来获得光谱的方法称为干涉光谱方法。这类光谱方法,按其光学技术,主要的有空间分光和调制频率(下简称调频)的分光两种。前者系将不同波长的各光谱元分布在空间的不同方向或位置,如用于研究光谱超精细结构的法卜利-白洛干涉仪等;后者系在双光束干涉仪中使相干光束间的位相差连续改变和同步地记录下表示由此改变而在中央条纹上产生的光强度变化的一条曲线——干涉图,然后作出表示此干涉图的函数的傅里叶余弦变换即得光谱。这样的光谱称为傅里叶光谱,对相应的光谱方法的研究构成傅里叶光谱学。由于傅里叶光谱学,在光学技术 I. Overview The method of obtaining a spectrum using an interferometer capable of generating higher order interference is called interference spectroscopy. Such spectral methods, according to their optical technology, the main spatial splitting and modulation frequency (hereinafter referred to FM) spectroscopy two. The former distributes the spectral elements of different wavelengths in different directions or positions in space, such as the Fabry-Perot interferometer used to study the ultrafine structure of the spectrum. The latter uses two-beam interferometer to make the coherent beams , A curve representing the change in light intensity resulting from the change in the central stripe, an interference pattern, is recorded and then a Fourier cosine transform, which is a function of the interferogram, is obtained. Such a spectrum is called Fourier spectroscopy, and the study of the corresponding spectroscopic method constitutes Fourier spectroscopy. Due to Fourier spectroscopy, in optical technology