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Proceedings Paper

Phase Spectra And Phase Corrections In High Resolution Fourier Transform Spectroscopy
Author(s): Mark C. Abrams
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Paper Abstract

Proper phase correction determines the accuracy and quality of the spectral information obtained by Fourier spectrometry. The spectrum produced by Fourier transforming an asymmetric interferogram is a complex function and the process of phase correction rotates the imaginary part of the spectrum into the real plane producing a real spectrum that contains all the spectral information and an imaginary part that contains only noise. For two-sided interferograms improper phase correction produces a second-order error in the intensity of the spectrum. In one-sided interferograms, the antisymmetric component of the interferogram transforms into the imaginary part of the line profile, and phase errors can have a first-order effect on the line position. Practical examples of phase spectra and both corrected and uncorrected power spectra will be presented.

Paper Details

Date Published: 1 December 1989
PDF: 3 pages
Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); doi: 10.1117/12.969413
Show Author Affiliations
Mark C. Abrams, University of California Berkeley (United States)

Published in SPIE Proceedings Vol. 1145:
7th Intl Conf on Fourier Transform Spectroscopy

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