Photometric Accuracy And Phase Correction In Fourier Transform Infrared (FTIR)

James M. Quigley

doi:10.1117/12.932185

29 October 1981 Photometric Accuracy And Phase Correction In Fourier Transform Infrared (FTIR)

James M. Quigley

Proceedings Volume 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy; (1981) https://doi.org/10.1117/12.932185
Event: 1981 International Conference on Fourier Transform Infrared Spectroscopy, 1981, Columbia, United States

Abstract

Photometric accuracy in Fourier spectroscopy depends not only on instrumental factors, but also on the method used to produce the spectrum from the interferogram. Almost all FT-IR instruments compute the spectrum by means of apodization, complex FFT and multiplicative phase correction steps. When the contribution of the apodization and phase correction steps to photometric inaccuracy is examined, two classes of error are found: error in computing the reference transform and error resulting from the contrast correction function. Means of eliminating of minimizing these errors are considered. Alternate methods of phase correction are discussed.

Citation Download Citation

James M. Quigley "Photometric Accuracy And Phase Correction In Fourier Transform Infrared (FTIR)", Proc. SPIE 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy, (29 October 1981); https://doi.org/10.1117/12.932185

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