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(一)红外傅里叶变换光谱(FT-IR)的特点 1.FT-IR FT-IR是利用干涉谱的傅里叶变换取得红外光谱的技术,被变换的干涉谱是双光束Michelson干涉仪当光束间光程差从零变到一些极大值时的记录。FT-IR系统是由Michelson干涉仪和计算机组成的,它是多路技术、干涉量度技术和变换技术的结合体。这里,光谱是通过数字变换复原的量,而干涉谱才是原始测量的量。当光源的发射为复色辐射时,干涉谱为:
(A) the characteristics of the infrared Fourier transform spectroscopy (FT-IR) 1. FT-IR FT-IR is the use of interferometric Fourier transform to obtain infrared spectroscopy technology, the interference spectrum is transformed by a two-beam Michelson interferometer Record when the optical path difference between beams changes from zero to some maximum value. The FT-IR system is composed of a Michelson interferometer and a computer. It is a combination of multiplexing, interference measurement and transformation techniques. Here, the spectrum is the amount recovered by digital transformation, and the interference spectrum is the amount originally measured. When the light source emits complex color radiation, the interference spectrum is: