University of Illinois Urbana-Champaign

Mid-infrared Spectroscopy Of Transient Species Using A Chip-scale Mid-infrared Optical Frequency Comb

Markus, Charles R.

Content Files
WJ08_1.pptx
5996.pdf

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https://hdl.handle.net/2142/116520

Description

Title
Mid-infrared Spectroscopy Of Transient Species Using A Chip-scale Mid-infrared Optical Frequency Comb
Author(s)
Markus, Charles R.
Contributor(s)
  • Okumura, Mitchio
  • Bagheri, Mahmood
  • Meyer, Jerry R.
  • Frez, Clifford
  • Vurgaftman, Igor
  • Canedy, Chadwick L.
  • Sterczewski, Lukasz A.
  • Ober, Douglas
  • Chen, TzuLing
Issue Date
2022-06-22
Keyword(s)
Instrument/Technique Demonstration
Abstract
Optical frequency combs have become a promising tool for sensitive and broadband spectroscopy. They are especially attractive for investigations of the structure and reactivity of transient species, where multiplexed detection provides information regarding reactive intermediates and product branching ratios. However, the cost and complexity of conventional frequency combs has inhibited their widespread use in chemistry laboratories. Frequency combs generated using semiconductor lasers, such as quantum or interband cascade lasers, offer an alternative that is compact and less technically demanding. We have employed interband cascade lasers, which provide coverage in the CH stretching region, to monitor reactions initiated by pulsed-laser photolysis using Vernier spectroscopy. The reaction between 1-hydroxyethyl radical and oxygen forms acetaldehyde, and is an ideal test-case for the newly constructed instrument. We will discuss the performance characteristics and applications of this new and promising technique.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Handle URL
https://hdl.handle.net/2142/116520
DOI
https://doi.org/10.15278/isms.2022.WJ08
Copyright and License Information
Copyright 2022 held by the authors

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Abstracts & Presentations - 2022 International Symposium on Molecular Spectroscopy PRIMARY