Photoacoustic detection of nitric oxide by use of a quantum-cascade laser
Photoacoustic detection of nitric oxide by use of a quantum-cascade laser
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DOI：
10.1364/ol.30.000988
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发表时间：
2005-05-01
期刊：
影响因子：
3.6
通讯作者：
Giancaspro, C
中科院分区：
文献类型：
--
作者：
Elia, A;Lugará, PM;Giancaspro, C
一氧化氮的检测限为500份109的光声痕量气体传感器的测量已被证明。辐射源是一个热电冷却的分布反馈量子级联激光器，在脉冲模式下工作在5.3 μ m附近，平均激光功率为8 mW。利用调制后的激光激发共振光声池的第一纵模。已经进行了初步的测量，以测试我们的光声传感器的性能，可能的改进，以达到较低的检测限进行了讨论。(c)2005年美国光学学会
A photoacoustic trace-gas sensor for the measurement of nitric oxide with a detection limit of 500 parts in 109 has been demonstrated. The radiation source was a thermoelectrically cooled distributed-feedback quantum-cascade laser operating in pulsed mode near 5.3 mu m with an average laser power of 8 mW. A resonant photoacoustic cell was excited in its first longitudinal mode by the modulated laser light. Preliminary measurements have been performed to test the performance of our photoacoustic sensor; possible improvements to reach lower detection limits are discussed. (c) 2005 Optical Society of America