Direct Mid-Infrared Frequency Comb Spectroscopy of Nitrocarburizing Plasma Processes

Lang, N.; Puth, Alexander; Klose, Sarah-Johanna; Kowzan, Grzegorz; Hamman, Stephan; Röpcke, J.; Masłowski, Piotr; Helden, J. H. van

doi:10.1364/fts.2018.fm2b.6

Light, Energy and the Environment 2018 (E2, FTS, HISE, SOLAR, SSL) 2018

DOI: 10.1364/fts.2018.fm2b.6

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Direct Mid-Infrared Frequency Comb Spectroscopy of Nitrocarburizing Plasma Processes

N. Lang

Alexander Puth

Sarah-Johanna Klose

et al.

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2020

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High resolution ZrF₄-fiber-delivered multi-species infrared spectroscopy

Johnson¹,

Castro-Marín²,

Kara³

et al. 2020

OSA Continuum

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Using coherent broadband mid-infrared light from a picosecond optical parametric oscillator we introduce a flexible, easy to use, high-resolution technique which can be utilized to conduct remote stand-off, or fiber delivered, multi-species spectroscopy in a spectroscopically cluttered environment. In particular, both narrow line-like and broad continuum-like species can be handled simultaneously. If only species with narrow line-like absorptions are present, this can be done without the need for an explicit reference spectrum. We demonstrate the approach by performing absorption spectroscopy of H2O, CH4, CH3OH and C2H7NO (MEA) at high optical resolution (≈0.033 cm−1) and via fiber delivery, opening the possibility of conducting multi-species spectroscopy in remote and hazardous environments. Spectral co-fitting of all absorption features and of the spectrum of the light-source provides a robust means of determining species concentrations, with detection limits of 290 ppb and 890 ppb obtained for CH4 and MEA respectively using a 10.5-m Herriott cell and 32 seconds measurement time.

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High resolution ZrF₄-fiber-delivered multi-species infrared spectroscopy

Johnson¹,

Castro-Marín²,

Kara³

et al. 2020

OSA Continuum

View full text Add to dashboard Cite

show abstract

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Direct Mid-Infrared Frequency Comb Spectroscopy of Nitrocarburizing Plasma Processes

Cited by 1 publication

References 2 publications

High resolution ZrF₄-fiber-delivered multi-species infrared spectroscopy

High resolution ZrF₄-fiber-delivered multi-species infrared spectroscopy

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Direct Mid-Infrared Frequency Comb Spectroscopy of Nitrocarburizing Plasma Processes

Cited by 1 publication

References 2 publications

High resolution ZrF4-fiber-delivered multi-species infrared spectroscopy

High resolution ZrF4-fiber-delivered multi-species infrared spectroscopy

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Product

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High resolution ZrF₄-fiber-delivered multi-species infrared spectroscopy

High resolution ZrF₄-fiber-delivered multi-species infrared spectroscopy