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Proceedings Paper

Lineshape determination using multiple pathlengths in Fourier transform interferometers
Author(s): William B. Cook
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Paper Abstract

In Fourier transform spectroscopy degradation in spectral resolution and the introduction of false spectral features (`feet') both result from the limited optical pathlength used by a real instrument. This work describes a quantitative relationship between the truncation length of an interferogram and the distortion of the computed halfwidth for the three most common spectral shapes: Gaussian, Lorentzian, and Voigt profiles. The technique can also be used to aid in the alignment and calibration of a Fourier transform interferometer by deriving a calculated truncated interferogram lineshape of a `known' spectral line to compare with the lineshape actually produced by the instrument.

Paper Details

Date Published: 30 September 1994
PDF: 12 pages
Proc. SPIE 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research, (30 September 1994); doi: 10.1117/12.187588
Show Author Affiliations
William B. Cook, Univ. of Michigan (United States)


Published in SPIE Proceedings Vol. 2266:
Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research
Jinxue Wang; Paul B. Hays, Editor(s)

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