Application of quantum cascade lasers to trace gas analysis

被引:320
作者
Kosterev, A. [1 ]
Wysocki, G. [1 ]
Bakhirkin, Y. [1 ]
So, S. [1 ]
Lewicki, R. [1 ]
Fraser, M. [1 ]
Tittel, F. [1 ]
Curl, R. F. [1 ]
机构
[1] Rice Univ, Rice Quantum Inst, Houston, TX 77005 USA
来源
APPLIED PHYSICS B-LASERS AND OPTICS | 2008年 / 90卷 / 02期
关键词
D O I
10.1007/s00340-007-2846-9
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Quantum cascade (QC) lasers are virtually ideal mid-infrared sources for trace gas monitoring. They can be fabricated to operate at any of a very wide range of wavelengths from similar to 3 mu m to similar to 24 mu m. Seizing the opportunity presented by mid-infrared QC lasers, several groups world-wide are actively applying them to trace gas sensing. Real world applications include environmental monitoring, industrial process control and biomedical diagnostics. In our laboratory we have explored the use of several methods for carrying out absorption spectroscopy with these sources, which include multipass absorption spectroscopy, cavity ring down spectroscopy (CRDS), integrated cavity output spectroscopy (ICOS), and quartz-enhanced photoacoustic spectroscopy (QEPAS).
引用
收藏
页码:165 / 176
页数:12
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