Thermoelectrically cooled quantum-cascade-laser-based sensor for the continuous monitoring of ambient atmospheric carbon monoxide
Thermoelectrically cooled quantum-cascade-laser-based sensor for the continuous monitoring of ambient atmospheric carbon monoxide
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DOI：
10.1364/ao.41.001169
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发表时间：
2002-02-20
期刊：
影响因子：
1.9
通讯作者：
Allen, MG
中科院分区：
文献类型：
--
作者：
Kosterev, AA;Tittel, FK;Allen, MG
我们报告的第一个应用程序的热电冷却，分布反馈量子级联激光连续光谱监测CO在环境空气中的波长为4.6妈妈。实验证明，在10 kHz脉冲激光重复频率下，102 cm光程和2.5 min数据采集时间的噪声等效检测限为12 ppm。该灵敏度对应于3 x 10（-5）的分数吸光度的标准误差。(C)2002年美国光学学会。
We report the first application of a thermoelectrically cooled, distributed-feedback quantum-cascade laser for continuous spectroscopic monitoring of CO in ambient air at a wavelength of 4.6 mum. A noise-equivalent detection limit of 12 parts per billion was demonstrated experimentally with a 102-cm optical pathlength and a 2.5-min data acquisition time at a 10-kHz pulsed-laser repetition rate. This sensitivity corresponds to a standard error in fractional absorbance of 3 x 10(-5). (C) 2002 Optical Society of America.