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  4. Mid-infrared Dual-comb Spectroscopy as Sensor: Fast and Precise Quantification of Multiple Gases
 
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2021
Conference Paper
Titel

Mid-infrared Dual-comb Spectroscopy as Sensor: Fast and Precise Quantification of Multiple Gases

Abstract
Dual-comb spectroscopy allows to record broadband transmission spectra fast and precisely. This bridges the gap between classical methods, where Fourier-Transform infrared spectroscopy excels in spectral bandwidth or tunable laser absorptions spectroscopy in sensitivity. Here we present a dualcomb based spectrometer for gas sensing in mid-infrared from 3 mm to 5 mm. Using the spectrometer as a sensor for a mixture of nitrous oxide (N2O) and carbon monoxide (CO) results in 48.3(2) ppm N2O and 29.10(7) ppm CO in 10 s. The limits of detection are 90 ppb N2O and 49 ppb CO in 25 s.
Author(s)
Nitzsche, Leonard
Fraunhofer-Institut für Physikalische Messtechnik IPM
Goldschmidt, Jens
Fraunhofer-Institut für Physikalische Messtechnik IPM
Kießling, Jens
Fraunhofer-Institut für Physikalische Messtechnik IPM
Wolf, Sebastian
Fraunhofer-Institut für Physikalische Messtechnik IPM
Kühnemann, Frank
Fraunhofer-Institut für Physikalische Messtechnik IPM
Wöllenstein, Jürgen
Fraunhofer-Institut für Physikalische Messtechnik IPM
Hauptwerk
SMSI 2021, Sensor and Measurement Science International
Konferenz
Conference "Sensor and Measurement Science International" (SMSI) 2021
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DOI
10.5162/SMSI2021/C3.1
Externer Link
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Language
English
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Fraunhofer-Institut für Physikalische Messtechnik IPM
Tags
  • Dual-Comb-Spectroscop...

  • spectrometer

  • mid-infrared

  • trace gas

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