QEPAS detector for rapid spectral measurements

被引：62

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

页码：173 / 180

页数：8

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[8]

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