Paper
16 September 1999 FTS line shapes and their importance in atmospheric measurements in the UV-VIS and the IR
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Proceedings Volume 3821, Environmental Sensing and Applications; (1999) https://doi.org/10.1117/12.364168
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany
Abstract
Concentration measurements of trace gases in the atmosphere require the use of highly sensitive and precise techniques. The Fourier transform absorption spectroscopy technique is one of them heavily used for atmospheric measurements. It is currently used in all spectral regions, from the far-IR to the near-UV. The spectra recorded will be either fully resolved, showing well separated lines, or will only show absorption bands consisting of a great number of overlapping lines. The algorithm used to retrieve the concentrations of the atmospherically important molecules depends on this, as well as the resolution used to record the spectra. In both cases however, the instrumental function will modify the spectrum shape and has to be taken into account. In order to retrieve concentrations with the best possible accuracy, a thorough understanding of how the instrumental function affects line profiles or absorbances is essential.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michel R. Carleer "FTS line shapes and their importance in atmospheric measurements in the UV-VIS and the IR", Proc. SPIE 3821, Environmental Sensing and Applications, (16 September 1999); https://doi.org/10.1117/12.364168
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KEYWORDS
Absorption

Fourier transforms

Molecules

Spectroscopy

Spectrographs

Apodization

Iris recognition

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