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Intracavity absorption spectroscopy of HCl isotopes, H2O, CH4, C2H4, and C2H6 in the 3.1-3.4 µm spectral range using a Cr:CdSe laser.

We demonstrate the first application of a Cr:CdSe laser for highly-sensitive multicomponent intracavity absorption spectroscopy around λ = 3.1-3.4 µm. A detection scheme based on an integrated recording of multiple (∼70) individual Cr:CdSe laser pulses after a single pump-pulse excitation is reported. The sensitivity of our system corresponds to an effective absorption path length of Leff ≈ 850 m. Exemplary measurements of atmospheric H2O and CH4, and additionally introduced gas-phase HCl, C2H4, or C2H6 are presented. The achieved noise-equivalent detection limits are in the ppb range. Possibilities for further sensitivity enhancement by up to a factor of 104 are discussed.

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Einordnung

Datum der Veröffentlichung:
24.10.2022
URN:
urn:nbn:de:hbz:465-20230420-104128-0
DOI:
10.1364/OE.471851
Sonstiger Identifikator (pubmed):
36298969
Sprache:
Englisch
Ressourcentyp:
Text
Kollektion:
E-Publikationen
Sachgruppen der Deutschen Nationalbibliographie:
620 Ingenieurwissenschaften und Maschinenbau
Einrichtung:
Fakultät für Ingenieurwissenschaften, Maschinenbau und Verfahrenstechnik, Institut für Energie- und Material-Prozesse (EMPI), Reaktive Fluide
Restriktion:
© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement https://doi.org/10.1364/OA_License_v2#VOR-OA. Users
may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for noncommercial purposes and appropriate attribution is maintained. All other rights are reserved.
Informationen zur Erstveröffentlichung:

Peter Fjodorow, Mikhail P. Frolov, Yuri V. Korostelin, Vladimir I. Kozlovsky, Christof Schulz, Stanislav O. Leonov, Yan K. Skasyrsky, and Nikolai N. Yuryshev, "Intracavity absorption spectroscopy of HCl isotopes, H2O, CH4, C2H4, and C2H6 in the 3.1–3.4 µm spectral range using a Cr:CdSe laser," Opt. Express 30, 40347-40356 (2022). https://doi.org/10.1364/OE.471851

Published: October 17, 2022

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The publication of this article was supported by the Publication Fund of the University of Duisburg-Essen.

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