Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 µm

Lendl, Bernhard; Moser, Harald

doi:10.1007/s00340-016-6355-6

Record link:

https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:3-1575
http://hdl.handle.net/20.500.12708/1047

Title:

Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 µm

Citation:

Lendl, B., & Moser, H. (2016). Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 µm. Applied Physics B: Lasers and Optics. https://doi.org/10.1007/s00340-016-6355-6

Publisher DOI:

10.1007/s00340-016-6355-6

CatalogPlus:

AC11360024

Publication Type:

Article - Original Research Article

Language:

English

Authors:

Lendl, Bernhard
Moser, Harald

Organisational Unit:

E164 - Institut für Chemische Technologien und Analytik

Journal:

Applied Physics B: Lasers and Optics

ISSN:

0946-2171

Date (published):

2016

Publisher:

Springer

Peer reviewed:

Yes

Abstract:

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 (3σ) of 8 ppmv was achieved for amplitude modulation mode with a 50-s averaging time for the H2S absorption near 1.6 µm. 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.

Additional information:

The final publication is available at Springer via <a href="https://doi.org/10.1007/s00340-016-6355-6" target="_blank">https://doi.org/10.1007/s00340-016-6355-6</a>.

License:

CC BY 4.0