@inproceedings{5940c839370344cc89ae31b61b855ee9,
title = "High-resolution spectroscopy with quantum cascade laser frequency combs",
abstract = "Optical frequency comb spectroscopy has proven an indispensable tool for high-resolution spectroscopy. QCL frequency combs offer the possibility to explore the mid-infrared spectral range. However, they suffer from large repetition frequencies which make them seemingly unsuitable for high resolution spectroscopy. We present three measurement modes overcoming this limitation. The rapid-sweep technique allows to retrieve the full high-resolution spectrum in 6ms, the step-sweep technique allows for high-resolution spectroscopy with spectral resolution <5e-4 cm-1. As a last technique we present the time-resolved step-sweep approach enabling high-resolution spectra of sub-millisecond-lived samples. It was assessed in a study of cold gases in supersonic beams. ",
keywords = "Dual-frequency comb, High-resolution, QCL, Spectroscopy",
author = "Markus Mangold and Pitt Allmendinger and Jakob Hayden and Florian Eigenmann and Olivier Browet and Muriel Lep{\`e}re and Michele Gianella and Lukas Emmenegger and Andreas Hugi",
note = "Funding Information: IRsweep would like to thank for the financial support of the Qombs and Hydroptics projects (funded by the European Union{\textquoteright}s Horizon 2020 research and innovation programme under grant agreement number 820419 and 871592), as well as the Innosuisse projects High yield QCL combs and MIR coatings for QCL comb spectroscopy (52899.1 IP-ENG, 48741.1 IP-EE) Publisher Copyright: {\textcopyright} 2022 SPIE.; Quantum Sensing and Nano Electronics and Photonics XVIII 2022 ; Conference date: 20-02-2022 Through 24-02-2022",
year = "2022",
doi = "10.1117/12.2609711",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Manijeh Razeghi and Khodaparast, {Giti A.} and Vitiello, {Miriam S.}",
booktitle = "Quantum Sensing and Nano Electronics and Photonics XVIII",
}