- Tytuł:
- Quartz enhanced photoacoustic spectroscopy based on an external cavity quantum cascade laser
- Autorzy:
-
Xu, L.
Zhou, S.
He, T.
Li, J. - Powiązania:
- https://bibliotekanauki.pl/articles/173669.pdf
- Data publikacji:
- 2018
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
external cavity quantum cascade laser
ECQCL
quartz enhanced photoacoustic spectroscopy
QEPAS
volatile organic compound
VOC
ethanol - Opis:
- Mid-infrared laser spectroscopy is a powerful analytical tool for trace gases detection. In this study, a spectroscopic system based on an external cavity quantum cascade laser (ECQCL) and quartz enhanced photoacoustic spectroscopy (QEPAS) was developed for volatile organic compounds (VOCs) measurements. Primary laboratory test on ethanol spectroscopy was investigated and compared with traditional direct absorption spectroscopy (DAS). Experimental results show that the proposed QEPAS is more sensitive than the conventional DAS method. In addition, the significant linear dependence of photoacoustic signal on sample pressures and laser operating parameters was observed.
- Źródło:
-
Optica Applicata; 2018, 48, 4; 687-695
0078-5466
1899-7015 - Pojawia się w:
- Optica Applicata
- Dostawca treści:
- Biblioteka Nauki
Artykuł