Abstract
A novel quartz enhanced photoacoustic spectroscopy (QEPAS) trace gas detection scheme is reported in this paper. A cylindrical lens was employed for near-infrared laser focusing. The laser beam was shaped as a planar line laser between the gap of the quartz tuning fork (QTF) prongs. Compared with a spherical lens-based QEPAS sensor, the cylindrical lens-based QEPAS sensor has the advantages of easier laser beam alignment and a reduction of stringent stability requirements. Therefore, the reported approach is useful in long-term and continuous sensor operation.
| Original language | English |
|---|---|
| Article number | 989 |
| Journal | Sensors |
| Volume | 16 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1 Jul 2016 |
Keywords
- Cylindrical lens
- HO quantification
- Planar laser
- QEPAS
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