Quantum cascade laser dual-comb spectroscopy (DCS) for methane gas mixture studies

Muriel Lepère, Olivier Browet, Sylvain Leonis, Jean Clément, Pitt Allmendinger, Kuno Knapp, Florian Eigenmann, Markus Mangold

Résultats de recherche: Contribution à un événement scientifique (non publié)Article

Résumé

For a long time FTIR and laser-based spectroscopies have been used for high resolution molecular spectroscopy studies. The recent development of Dual-Comb Spectroscopy at high resolution (<0.001 cm-1) makes this technique a powerful tool for gas phase studies. The IRis-F1 is a dual-comb spectrometer building on quantum cascade laser frequency combs. We show that it is very well adapted for measurements of line shape parameters. Despite its weak abundance, methane effect on climate and atmospheric chemistry is important. We measured with IRis-F1 the half-widths of absorption lines of methane diluted in nitrogen, and compared with results obtained by other spectroscopies.
langue originaleAnglais
Les DOIs
Etat de la publicationPublié - 31 mars 2021
EvénementSPIE BiOS 2021 Digital Forum -
Durée: 6 mars 202111 mars 2021
https://www.spie.org/conferences-and-exhibitions/photonics-west/program/conferences/bios?SSO=1

Comité scientifique

Comité scientifiqueSPIE BiOS 2021 Digital Forum
période6/03/2111/03/21
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