Sensitive absorption measurements of hydrogen sulfide at 1.578 μm using wavelength modulation spectroscopy
Xia Hua (夏滑), Dong Feng-Zhong (董凤忠), Wu Bian (吴边), Zhang Zhi-Rong (张志荣), Pang Tao (庞涛), Sun Peng-Shuai (孙鹏帅), Cui Xiao-Juan (崔小娟), Han Luo (韩荦), Wang Yu (王煜)
Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics&Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
Abstract Sensitive detection of hydrogen sulfide (H2S) has been performed by means of wavelength modulation spectroscopy (WMS) near 1.578 μm. With the scan amplitude and the stability of the background baseline taken into account, the response time is 4 s for a 0.8 L multi-pass cell with a 56.7 m effective optical path length. Moreover, the linearity has been tested in the 0-50 ppmv range. The detection limit achievable by the Allan variance is 224 ppb within 24 s under room temperature and ambient pressure conditions. This tunable diode laser absorption spectroscopy (TDLAS) system for H2S detection has the feasibility of real-time online monitoring in many applications.
Fund: Project supported by the Special Fund for Basic Research on Scientific Instruments of the Chinese Academy of Sciences (Grant No. YZ201315) and the National Natural Science Foundation of China (Grant Nos. 11204320, 41405034, and 11204319).
Xia Hua (夏滑), Dong Feng-Zhong (董凤忠), Wu Bian (吴边), Zhang Zhi-Rong (张志荣), Pang Tao (庞涛), Sun Peng-Shuai (孙鹏帅), Cui Xiao-Juan (崔小娟), Han Luo (韩荦), Wang Yu (王煜) Sensitive absorption measurements of hydrogen sulfide at 1.578 μm using wavelength modulation spectroscopy 2015 Chin. Phys. B 24 034204
[1]
Chen W D, Kostere A A, Tittel F K, Gao X M and Zhao W X 2007 Appl. Phys. B 7 2858
[2]
Li J Y, Du Z H, Ma Y W and X K X 2013 Chin .Phys. B 22 034203
[3]
Tu G J, Wang Y, Dong F Z, Xia H, Pang T, Zhang Z R and Wu B 2012 Chin. Opt. Lett. 10 042801
[4]
Che L, D Y J, Peng Z M and L X H 2012 Chin. Phys. B 21 127803
[5]
Viciani S, Amato F D, Mazzinghi P, Castagnoli F, Toci G and Werle P 2008 Appl. Phys. B 90 581
[6]
Roller C, Fried A, Walega J, Weibring P and Tittel F 2006 Appl. Phys. B 82 247
[7]
Varga A, Bozoki Z, Szakall M and Szabo G 2006 Appl. Phys. B 85 315
[8]
Zhang Z R, Wu B, Xia H, Pang T, Wang G X, Sun P Si, Dong F Z and Wang Y 2013 Acta. Phys. Sin. 62 234204 (in Chinese)
[9]
Werle P 2011 Appl. Phys. B 10 4165
[10]
Xia H, Wu B, Zhang Z R, Pang T, Dong F Z and W Y 2013 Acta. Phys. Sin. 62 214208 (in Chinese)
[11]
Zhang Z R, Xia H, Dong F Z, Pang T, Wu B, Sun P S, Wang G X and Wang Y 2013 Europhys. Lett. 104 44002
[12]
Xia H, Dong F Z, Tu G J, Wu B and Zhang Z R 2011 Acta. Opt. Sin. 30 02596 (in Chinese)
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