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Proceedings Paper

High Information Differential Fourier Spectroscopy
Author(s): G. Guelachvili
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Paper Abstract

After a brief review giving an account of the life of FTS in France, the latest interactions between infrared Doppler limited molecular spectroscopy and FTS are presented. Recent results on vibration rotation spectra together with the description of the new method allowing cancellation of systematic distortions on Fourier spectra to be compared are given. Particular application of the new method on pressure-shift experiment on the 1-0 12C16O vibration rotation band demonstrates an improvement of two orders of magnitude over the best previous results. Shifts due to 5 torr of CO are detectable between spectra having a S/N of about 200. Comparison between identical spectra experimentally shows under such S/N conditions no evidence of remaining differential systematic errors, within 10-6 cm-1 (30 KHz). The 50 lines of the band of CO taken as a test are extracted from 300,000 spectral elements spectra. Various aspects of these preliminary results are discussed.

Paper Details

Date Published: 29 October 1981
PDF: 1 pages
Proc. SPIE 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy, (29 October 1981); doi: 10.1117/12.932209
Show Author Affiliations
G. Guelachvili, Universite de Paris-Sud (France)

Published in SPIE Proceedings Vol. 0289:
1981 Intl Conf on Fourier Transform Infrared Spectroscopy
Hajime Sakai, Editor(s)

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