An Accurate Methane Line List in the 7.2–8.0 µm Range from Comb-Based Fourier Transform Spectroscopy

Matthias Germann; Adrian Hjältén; Vincent Boudon; Cyril Richard; Karol Krzempek; Arkadiusz Hudzikowski; Aleksander Głuszek; Grzegorz Soboń; Aleksandra Foltynowicz

doi:10.1364/CLEO_SI.2022.SM3F.6

Conference on Lasers and Electro-Optics
Technical Digest Series (Optica Publishing Group, 2022),
paper SM3F.6
•https://doi.org/10.1364/CLEO_SI.2022.SM3F.6

An Accurate Methane Line List in the 7.2–8.0 µm Range from Comb-Based Fourier Transform Spectroscopy

Matthias Germann, Adrian Hjältén, Vincent Boudon, Cyril Richard, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Głuszek, Grzegorz Soboń, and Aleksandra Foltynowicz

CLEO: Science and Innovations 2022

San Jose, California United States
15–20 May 2022
ISBN: 978-1-957171-05-0

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Spectroscopy for Optical Metrology (SM3F)

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M. Germann, A. Hjältén, V. Boudon, C. Richard, K. Krzempek, A. Hudzikowski, A. Głuszek, G. Soboń, and A. Foltynowicz, "An Accurate Methane Line List in the 7.2–8.0 µm Range from Comb-Based Fourier Transform Spectroscopy," in Conference on Lasers and Electro-Optics, Technical Digest Series (Optica Publishing Group, 2022), paper SM3F.6.

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Abstract

We use comb-based Fourier transform spectroscopy to record high-resolution spectra of ¹²CH₄ and ¹³CH₄ from 1250 to 1380 cm^-1. We obtain line positions and intensities of 4 bands with uncertainties of ~450 kHz and ~3%, respectively, which we use to improve a global fit of the effective Hamiltonian.

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