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- [1] Nitrogen Dioxide Detection by use of Photoacoustic Spectroscopy with a High Power Violet-Blue Diode Laser2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2017,Dong, LeiYin, XukunZheng, HuadanWu, HongpengJia, Suotang
Sub-ppb nitrogen dioxide detection with a large linear dynamic range by use of a differential photoacoustic cell and a 3.5 W blue multimode diode laser
被引：122
|作者：
Yin, Xukun
[1
,2
]
Dong, Lei
[1
,2
]
Wu, Hongpeng
[1
,2
]
Zheng, Huadan
[1
,2
,3
]
Ma, Weiguang
[1
,2
]
Zhang, Lei
[1
,2
]
Yin, Wangbao
[1
,2
]
Jia, Suotang
[1
,2
]
Tittel, Frank K.
[3
]
机构：
[1] Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
[3] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA
基金：
美国国家科学基金会;
中国国家自然科学基金;
关键词：
Photoacoustic spectroscopy;
Gas sensor;
Trace gas detection;
High power multimode diode laser;
Differential photoacoustic cell;
QUANTUM CASCADE LASER;
MODULATION CANCELLATION METHOD;
FARADAY-ROTATION SPECTROSCOPY;
MU-M;
MOLECULAR RELAXATION;
LEVEL DETECTION;
NO2;
DETECTION;
QEPAS SENSOR;
ABSORPTION;
IMPACT;
D O I：
10.1016/j.snb.2017.03.058
中图分类号：
O65 [分析化学];
学科分类号：
070302 ;
081704 ;
摘要：
A sub-ppb level photoacoustic spectroscopy (PAS)-based sensor for nitrogen dioxide (NO2) detection was developed by means of a 3.5 W CW multimode diode laser emitting at 447 nm. A differential photoacoustic cell was designed to match the imperfect laser beam and reduce the external acoustic as well as the electromagnetic noise. The diode laser power, gas flow and pressure of the sensor were optimized, which resulted in a NO2 sensor system with a detection limit of 54 pptv with a 1-s averaging time and an excellent linear dynamic range over > three orders of magnitude. The impact of water vapor as the catalyst on the photoacoustic signal amplitude was also investigated. Continuous measurements covering an eight-day period were performed to demonstrate the stability and robustness of the reported PAS -based NO2 sensor system. (C) 2017 Elsevier B.V. All rights reserved.
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页码：329 / 335
页数：7
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