Open AccessHollow core fiber-assisted absorption spectroscopy of methane at 34 µm
Author(s) -
Michał Nikodem,
Karol Krzempek,
Grzegorz Dudzik,
Krzysztof M. Abramski
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.021843
Subject(s) - materials science , photonic crystal fiber , optics , spectrometer , fiber laser , laser , spectroscopy , optical fiber , fiber , optoelectronics , attenuation , wavelength , physics , quantum mechanics , composite material
A laser-based spectrometer exploiting a novel Kagome-type hollow core photonic crystal fiber, which serves as a gas cell is demonstrated. Low attenuation of this silica-based fiber in the 3.4 µm wavelength region enables accessing strong, fundamental transitions of methane, which was used as a target analyte in the presented experiment. With an all-fiber differential frequency generation source combined with wavelength modulation spectroscopy technique detection limit at single parts-per-million by volume level was obtained. These results show potential for developing compact and sensitive Kagome-fiber-based mid-infrared laser spectrometers.