OPTICAL FREQUENCY COMB CAVITY ENHANCED VERNIER SPECTROSCOPY FOR THE DETECTION OF TRANSIENT SPECIES

Bashiri, Termeh

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https://hdl.handle.net/2142/122506 Copy

Description

Title

OPTICAL FREQUENCY COMB CAVITY ENHANCED VERNIER SPECTROSCOPY FOR THE DETECTION OF TRANSIENT SPECIES

Author(s)

Bashiri, Termeh

Contributor(s)

• Frez, Clifford
• Vurgaftman, Igor
• Canedy, Chadwick L
• Sterczewski, Lukasz A.
• Ober, Douglas
• Chen, Tzu-Ling
• Markus, Charles R.
• Okumura, Mitchio
• Bagheri, Mahmood
• Meyer, Jerry R

Issue Date

2023-06-20

Keyword(s)

Instrument/Technique Demonstration

Abstract

When paired with cavity enhancement, interband cascade optical frequency combs offer a highly sensitive method for broadband spectroscopy. We present a new method for the detection of UV photolysis-generated transient species using cavity enhanced Vernier spectroscopy with a mid-IR interband cascade frequency comb. The cavity is used to generate an enhanced spectrum by extending the pathlength. This technique allows for the real-time high-resolution detection of short-lived species. We will discuss the benchmark reaction between hydroxymethyl radicals and oxygen to form formaldehyde, as well as the application of this new technique for the detection of resonance-stabilized radicals.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Genre of Resource

Conference Paper / Presentation

Language

eng

Handle URL

https://hdl.handle.net/2142/122506

DOI

https://doi.org/10.15278/isms.2023.6979

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