QEPAS detector for rapid spectral measurements

被引：58
|
作者：
Kosterev, A. A. [1 ]
Buerki, P. R. [2 ]
Dong, L. [1 ]
Reed, M. [2 ]
Day, T. [2 ]
Tittel, F. K. [1 ]
机构：
[1] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77251 USA
[2] Daylight Solut Inc, Poway, CA 92064 USA
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2010年 / 100卷 / 01期
基金：
美国国家科学基金会;
关键词：
SPECTROSCOPY;
D O I：
10.1007/s00340-010-3975-0
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A quartz enhanced photoacoustic spectroscopy sensor designed for fast response was used in combination with a pulsed external cavity quantum cascade laser to rapidly acquire gas absorption data over the 1196-1281 cm(-1) spectral range. The system was used to measure concentrations of water vapor, pentafluoroethane (freon-125), acetone, and ethanol both individually and in combined mixtures. The precision achieved for freon-125 concentration in a single 1.1 s long spectral scan is 13 ppbv.
引用
收藏
页码：173 / 180
页数：8
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