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

doi:10.1117/12.2582747

31 March 2021 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

Author Affiliations +

Proceedings Volume 11635, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI; 1163510 (2021) https://doi.org/10.1117/12.2582747
Event: SPIE BiOS, 2021, Online Only

Abstract

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.

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Citation Download Citation

Muriel Lepère, Olivier Browet, Sylvain Leonis, Jean Clément, Pitt Allmendinger, Kuno Knapp, Florian Eigenmann, and Markus Mangold "Quantum cascade laser dual-comb spectroscopy (DCS) for methane gas mixture studies", Proc. SPIE 11635, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI, 1163510 (31 March 2021); https://doi.org/10.1117/12.2582747

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