Abstract

In Fourier transform absorbance spectroscopy, several types of baseline errors may be caused by the variations in the optical system, especially in the interferometer. The nature and causes of these errors have been studied. Furthermore, a method to eliminate the effect of these errors on multicomponent analysis is introduced. The nature of the errors has been experimentally verified, and a practical example of the use of the correction method is presented.

Study on baseline correction methods for the Fourier transform infrared spectra with different signal-to-noise ratios

Xianchun Shen, Shubin Ye, Liang Xu, Rong Hu, Ling Jin, Hanyang Xu, Jianguo Liu, and Wenqing Liu
Appl. Opt. 57(20) 5794-5799 (2018)

Automatic baseline correction method for the open-path Fourier transform infrared spectra by using simple iterative averaging

Xianchun Shen, Liang Xu, Shubin Ye, Rong Hu, Ling Jin, Hanyang Xu, and Wenqing Liu
Opt. Express 26(10) A609-A614 (2018)

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Eliminating channel spectra in Fourier transform spectroscopy

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Appl. Opt. 27(12) 2603-2607 (1988)

Multiple order spectra in Fourier transform infrared spectroscopy

Tomas Hirschfeld
Appl. Opt. 16(7) 1905-1907 (1977)