Direct absorption measurement of ambient nitric oxide based on room-temperature pulsed quantum cascade laser

Yuan-yuan Tang; Wen-Qing Liu; Rui-Feng Kan; Yu-Jun Zhang; Yi-Ben Cui; Zhen-Yu Xu

doi:10.1117/12.866203

16 October 2010 Direct absorption measurement of ambient nitric oxide based on room-temperature pulsed quantum cascade laser

Yuan-yuan Tang, Wen-Qing Liu, Rui-Feng Kan, Yu-Jun Zhang, Yi-Ben Cui, Zhen-Yu Xu

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Proceedings Volume 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 76565F (2010) https://doi.org/10.1117/12.866203
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

The Mid-infrared lasers are very effective for high-sensitive trace gas detection for the fundamental absorption lines of most gases. The quantum cascade (QC) laser, with the advantages of high power, wide tuning range and room-temperature operating conditions, is one of the ideal mid-IR sources developed in these years. The technology combing the room-temperature pulsed quantum cascade laser and the long-path multipass absorption cell can satisfy the need for the sensitivity, selectivity and rapid response. A set of experimental apparatus for the direct absorption measurement of ambient nitric oxide(NO) with the room-temperature pulsed QC laser was presented. With this system a NO concentration of 188ppb was demonstrated, along with an estimated detection limit of 4ppb. The results show that this experimental apparatus can fulfill the detection of NO concentration in ambient air.

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Yuan-yuan Tang, Wen-Qing Liu, Rui-Feng Kan, Yu-Jun Zhang, Yi-Ben Cui, and Zhen-Yu Xu "Direct absorption measurement of ambient nitric oxide based on room-temperature pulsed quantum cascade laser", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76565F (16 October 2010); https://doi.org/10.1117/12.866203

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KEYWORDS

Absorption

Quantum cascade lasers

Mid-IR

Absorbance

Databases

NOx

Sensors

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