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Proceedings Paper

Research on the trace detection of carbon dioxide gas and modulation parameter optimization based on the TDLAS technology
Author(s): Peng Zhao; Jun Tao; Chang-rui Yu; Ye Li
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Paper Abstract

Based on the technology of tunable diode laser absorption spectroscopy, modulation of the center wavelength of 2004 nm distributed feedback laser diode at a room-temperature, the second harmonic amplitude of CO2 at 2004nm can be obtained. The CO2 concentration can be calculated via the Beer-Lambert law. Sinusoidal modulation parameter is an important factor that affects the sensitivity and accuracy of the system, through the research on the relationship between sinusoidal modulation signal frequency, amplitude and Second harmonic linetype, we finally achieve the detection limit of 10ppm under 12 m optical path.

Paper Details

Date Published: 21 February 2014
PDF: 6 pages
Proc. SPIE 9142, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013, 914210 (21 February 2014); doi: 10.1117/12.2055716
Show Author Affiliations
Peng Zhao, Changchun Univ. of Science and Technology (China)
Jilin Normal Univ. (China)
Jun Tao, Changchun Univ. of Science and Technology (China)
Chang-rui Yu, Changchun Univ. of Science and Technology (China)
Ye Li, Changchun Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9142:
Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013
Jorge Ojeda-Castaneda; Shensheng Han; Ping Jia; Jiancheng Fang; Dianyuan Fan; Liejia Qian; Yuqiu Gu; Xueqing Yan, Editor(s)

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