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

Markus, Charles R.

Permalink

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

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

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

Owning Collections