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Proceedings Paper

Laser absorption spectroscopy and gas sensing near 4.5 µm inside antiresonant hollow core fiber
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Paper Abstract

We present laser-based spectroscopy in the mid-infrared spectral region inside novel anti-resonant (AR) hollow core fiber (HCF). AR-HCF used in this work has small (few dB/m) attenuation near 4 µm and exceptionally small bending losses. This gives perspective for compact all-fiber-based mid-infrared chemical sensors with optical path lengths of several meters. For gas sensing demonstration, a distributed feed-back (DFB) quantum cascade laser (QCL) operating near 4.54 μm and a 3.2-m-long fiber were used to detect nitrous oxide (N2O) and carbon monoxide (CO) using direct laser absorption spectroscopy (DLAS) and wavelength modulation spectroscopy (WMS).

Paper Details

Date Published: 1 April 2020
PDF: 6 pages
Proc. SPIE 11354, Optical Sensing and Detection VI, 113540N (1 April 2020); doi: 10.1117/12.2555167
Show Author Affiliations
Michal Nikodem, Wroclaw Univ. of Science and Technology (Poland)
Grzegorz Gomólka, Wroclaw Univ. of Science and Technology (Poland)
Mariusz Klimczak, Łukasiewicz Research Network, Institute of Electronic Materials Technology (Poland)
Dariusz Pysz, Łukasiewicz Research Network, Institute of Electronic Materials Technology (Poland)
Ryszard Buczyński, Łukasiewicz Research Network, Institute of Electronic Materials Technology (Poland)
Univ. of Warsaw (Poland)


Published in SPIE Proceedings Vol. 11354:
Optical Sensing and Detection VI
Francis Berghmans; Anna G. Mignani, Editor(s)

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