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Mid-infrared optical frequency comb spectroscopy using an all-silica antiresonant hollow-core fiber
Laser & Fiber Electronics Group, Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology, Wybrzeze Wyspianskiego 27, Wroclaw, Poland.
Laser & Fiber Electronics Group, Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology, Wybrzeze Wyspianskiego 27, Wroclaw, Poland.
Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.
Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.
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2024 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 32, no 6, p. 10679-10689Article in journal (Refereed) Published
Abstract [en]

We present the first mid-infrared optical frequency comb spectrometer employing an absorption cell based on self-fabricated, all-silica antiresonant hollow-core fiber (ARHCF). The spectrometer is capable of measuring sub-mL sample volumes with 26 m interaction length and noise equivalent absorption sensitivity of 8.3 × 10−8 cm−1 Hz−1/2 per spectral element in the range of 2900 cm−1 to 3100 cm−1. Compared to a commercially available multipass cell, the ARHCF offers a similar interaction length in a 1000 times lower gas sample volume and a 2.8 dB lower transmission loss, resulting in better absorption sensitivity. The broad transmission windows of ARHCFs, in combination with a tunable optical frequency comb, make them ideal for multispecies detection, while the prospect of measuring samples in small volumes makes them a competitive technique to photoacoustic spectroscopy along with the robustness and prospect of coiling the ARHCFs open doors for miniaturization and out-of-laboratory applications.

Place, publisher, year, edition, pages
Optica Publishing Group , 2024. Vol. 32, no 6, p. 10679-10689
National Category
Atom and Molecular Physics and Optics
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URN: urn:nbn:se:umu:diva-223068DOI: 10.1364/OE.517012Scopus ID: 2-s2.0-85187792371OAI: oai:DiVA.org:umu-223068DiVA, id: diva2:1852426
Funder
Knut and Alice Wallenberg Foundation, KAW 2020.0303Swedish Research Council, 2020-00238Available from: 2024-04-18 Created: 2024-04-18 Last updated: 2024-04-18Bibliographically approved

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Foltynowicz, Aleksandra

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