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Title
Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 m
AuthorLendl, Bernhard ; Moser, Harald
Published in
Applied Physics B, Berlin; Heidelberg, 2016, Vol. 122, Issue 83, page 1-11
PublishedBerlin; Heidelberg : Springer, 2016
Edition
Published version
Annotation
The final publication is available at Springer via https://doi.org/10.1007/s00340-016-6355-6.
LanguageEnglish
Document typeJournal Article
ISSN1432-0649
URNurn:nbn:at:at-ubtuw:3-1575 Persistent Identifier (URN)
DOI10.1007/s00340-016-6355-6 
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 The work is publicly available
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Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 m [1.02 mb]
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Abstract (English)

Sensitive detection of hydrogen sulfide (H2S) at different pressure levels using a cantilever-enhanced photoacoustic detector in combination with a telecom NIR L-band laser source is reported. Amplitude and wavelength modulation schemes for photoacoustic signal generation are compared. A detection limit (3) of 8 ppmv was achieved for amplitude modulation mode with a 50-s averaging time for the H2S absorption near 1.6 m. As compared to simulated spectra, the cantilever-enhanced photoacoustic detection approach in combination with the sufficiently stable and narrow bandwidth NIR laser is able to reproduce the rotationally resolved H2S spectrum at low pressures of 300 mbar.

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CC-BY-License (4.0)Creative Commons Attribution 4.0 International License