Abstract:FTIR Technique has developed rapidly since 1980s, and has become increasingly important. It has been used in a variety of fields. In order to make sure the result is of nicety, the authors should manipulate the FTIR spectrometer accurately and study its instrument response function and calibration arithmetic. Because the instrument response of the detector of FTIR spectrometer is different at different wave band, the no-calibrated spectrum was ruleless. Without calibration, we can not obtain the absolute intensity, even relative intensity. There are two calibration arithmetics: Linear calibration arithmetic corresponding linear detector and non-calibration arithmetic corresponding non-linear detector. The present paper gave the arithmetic of linear calibration and non-linear multiple point calibration. The authors measured several blackbody spectra at some different temperatures. Some of them were used for calibration and one was used to test the result of calibration. The result indicated that this method of non-linear multiple point calibration was very good. The relative arbitrary between calibrated blackbody spectrum and standard blackbody spectrum was near 0.2%, while the maximum was still lower than 0.4%.
刘志明,高闽光,刘文清,陆亦怀,张天舒,徐亮,魏秀丽. 傅里叶变换红外光谱(FTIR)非线性多点定标方法研究[J]. 光谱学与光谱分析, 2008, 28(09): 2077-2080.
LIU Zhi-ming,GAO Min-guang,LIU Wen-qing,LU Yi-huai,ZHANG Tian-shu,XU Liang,WEI Xiu-li. Study on the Method of FTIR Spectrum Non Linear Multiple Point Calibration. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(09): 2077-2080.