Formaldehyde sensor using interband cascade laser based quartz-enhanced photoacoustic spectroscopy

被引：0
|
作者：
M. Horstjann
Y.A. Bakhirkin
A.A. Kosterev
R.F. Curl
F.K. Tittel
C.M. Wong
C.J. Hill
R.Q. Yang
机构：
[1] Rice University,Rice Quantum Institute
[2] California Institute of Technology,Jet Propulsion Laboratory
来源：
Applied Physics B | 2004年 / 79卷
关键词：
Formaldehyde; Output Power; Laser Power; Quantum Electronics; Detection Sensitivity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel continuous-wave mid-infrared distributed feedback interband cascade laser was utilized to detect and quantify formaldehyde (H2CO) using quartz-enhanced photoacoustic spectroscopy. The laser was operated at liquid-nitrogen temperatures and provided single-mode output powers of up to 12 mW at 3.53 μm (2832.5 cm-1). The noise equivalent (1σ) detection sensitivity of the sensor was measured to be 2.2×10-8 cm-1 W (Hz)-1/2 for H2CO in ambient air, which corresponds to a detection limit of 0.6 parts in 106 by volume (ppmv) for a 10 s sensor time constant and 3.4 mW laser power delivered to the sensor module.
引用
收藏
页码：799 / 803
页数：4
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