›› 2015, Vol. 24 ›› Issue (3): 34204-034204.doi: 10.1088/1674-1056/24/3/034204

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Sensitive absorption measurements of hydrogen sulfide at 1.578 μm using wavelength modulation spectroscopy

夏滑, 董凤忠, 吴边, 张志荣, 庞涛, 孙鹏帅, 崔小娟, 韩荦, 王煜   

  1. Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics&Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • 收稿日期:2014-09-19 修回日期:2014-10-10 出版日期:2015-03-05 发布日期:2015-03-05
  • 基金资助:
    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).

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)   

  1. Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics&Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2014-09-19 Revised:2014-10-10 Online:2015-03-05 Published:2015-03-05
  • Contact: Dong Feng-Zhong E-mail:fzdong@aiofm.ac.cn
  • Supported by:
    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).

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摘要： 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.

关键词: tunable diode laser spectroscopy, wavelength modulation, hydrogen sulfide detection, low absorbance condition

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.

Key words: tunable diode laser spectroscopy, wavelength modulation, hydrogen sulfide detection, low absorbance condition

中图分类号:  (Laser spectroscopy)

  • 42.62.Fi
42.55.Px (Semiconductor lasers; laser diodes) 42.79.-e (Optical elements, devices, and systems) 42.87.-d (Optical testing techniques)