Application of quantum cascade lasers to trace gas analysis
Application of quantum cascade lasers to trace gas analysis
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DOI：
10.1007/s00340-007-2846-9
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发表时间：
2008-02-01
影响因子：
2.1
通讯作者：
Curl, R. F.
中科院分区：
文献类型：
--
作者：
Kosterev, A.;Wysocki, G.;Curl, R. F.
量子级联(QC)激光器是监测痕量气体的理想中红外光源。它们可以在非常宽的波长范围内工作，从类似于3微米到类似于24微米。抓住中红外QC激光器带来的机遇，世界各地的几个小组正在积极地将它们应用于示踪气体传感。现实世界的应用包括环境监测、工业过程控制和生物医学诊断。在我们的实验室中，我们探索了几种利用这些光源进行吸收光谱的方法，包括多通道吸收光谱、腔衰荡光谱(CRDS)、集成腔输出光谱(ICOS)和石英增强光声光谱(QEPAS)。
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).