Zeitschriftenartikel:
J.P. Waclawek, R. Lewicki, H. Moser, M. Brandstetter, F.K. Tittel, B. Lendl:
"Quartz-enhanced photoacoustic spectroscopy-based sensor system for sulfur dioxide detection using a CW DFB-QCL";
Applied Physics B - Lasers and Optics,
117
(2014),
1;
S. 113
- 120.
Kurzfassung englisch:
Sulfur dioxide (SO2) trace gas detection based on quartz-enhanced photoacoustic spectroscopy (QEPAS) using a continuous wave, distributed feedback quantum cascade laser operating at 7.24 μm was performed. Influence of water vapor addition on monitored QEPAS SO2 signal was also investigated. A normalized noise equivalent absorption coefficient of NNEA (1σ) = 1.21 × 10−8 cm−1 W Hz−1/2 was obtained for the ν 3 SO2 line centered at 1,380.93 cm−1 when the gas sample was moisturized with 2.3 % H2O. This corresponds to a minimum detection limit (1σ) of 63 parts per billion by volume for a 1 s lock-in time constant.
Schlagworte:
CW-DFB-QCL, QEPAS, SO2
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1007/s00340-014-5809-y
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.