Roberts, FC orcid.org/0000-0002-2094-8785, Lewandowski, HJ orcid.org/0000-0002-0995-552X, Hobson, BF et al. (1 more author) (2020) A rapid, spatially dispersive frequency comb spectrograph aimed at gas phase chemical reaction kinetics. Molecular Physics. ISSN 0026-8976
Abstract
This New Views article will highlight some recent advances in high sensitivity gas detection using direct infrared absorption frequency comb laser spectroscopy, with a focus on frequency comb use in chemical reaction kinetics and our own contribution to this field. Our recently implemented detection technique uses a combination of a 12.9 GHz free spectral range virtually imaged phased array and diffraction grating to spatially disperse the mid-infrared frequency comb onto a camera. Individual frequencies or ‘comb teeth’ of a 250 MHz repetition-rate frequency comb are able to be resolved. High molecular sensitivity is achieved by increasing the interaction path length using a Herriott multipass cell. High spectral resolution, broadband spectral coverage, and high molecular sensitivity are all achieved on an adjustable 1–50 µs timescale, making this frequency comb apparatus ideal for measuring chemical reaction kinetics where multiple absorbing species can be monitored simultaneously. This New Views article will also discuss some of the challenges and decisions that chemists might face in implementing this advanced physics technology in their own laboratory.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Informa UK Limited, trading as Taylor & Francis Group. This is an author produced version of an article published in Molecular Physics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Frequency combs, chemical kinetics, trace gas detection |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Physical Chemistry (Leeds) |
Funding Information: | Funder Grant number EU - European Union 743642 EPSRC (Engineering and Physical Sciences Research Council) EP/R01518X/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Feb 2020 14:20 |
Last Modified: | 19 Dec 2024 08:44 |
Status: | Published online |
Publisher: | Taylor & Francis |
Identification Number: | 10.1080/00268976.2020.1733116 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:157286 |