L Menzel,A A Kosterev,R F Curl et al.
L Menzel et al.
Two configurations of a continuous wave quantum cascade distributed feedback laser-based gas sensor for the detection of NO at a parts per billion (ppb) concentration level, typical of biomedical applications, have been investigated. The la...
Mid-infrared trace gas detection using continuous-wave difference frequency generation in periodically poled RbTiOAsO4 [0.03%]
基于周期极化RbTiOAsO4中连续波差频产生的中期红外痕量气体检测
W Chen,G Mouret,D Boucher et al.
W Chen et al.
A tunable mid-infrared continuous-wave (cw) spectroscopic source in the 3.4-4.5 micrometers region is reported, based on difference frequency generation (DFG) in a quasi-phase-matched periodically poled RbTiOAsO4 (PPRTA) crystal. DFG power ...
Portable fiber-coupled diode-laser-based sensor for multiple trace gas detection [0.03%]
一种便携式多组分痕量气体检测的半导体激光传感器
D G Lancaster,D Richter,F K Tittel
D G Lancaster
Tunable narrowband mid-infrared radiation from 3.25 to 4.4 micrometers is generated by a compact fiber-coupled, difference-frequency-based spectroscopic source. A 20-mW external cavity diode laser (with a tuning range from 814 to 870 nm) an...