• Journal of Atmospheric and Environmental Optics
  • Vol. 20, Issue 2, 168 (2025)
YANG Zijian1, LI Lin1, GUO Guqing1, GONG Ting1..., LIU Qiang2, TIAN Yali1, SUN Xiaocong1, QIU Xuanbing1 and LI Chuanliang1,*|Show fewer author(s)
Author Affiliations
  • 1Shanxi Engineering Research Center of Precision Measurement and Online Detection Equipment and School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China
  • 2Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, HFIPS,Chinese Academy of Sciences, Hefei 230031, China
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    DOI: 10.3969/j.issn.1673-6141.2025.02.005 Cite this Article
    Zijian YANG, Lin LI, Guqing GUO, Ting GONG, Qiang LIU, Yali TIAN, Xiaocong SUN, Xuanbing QIU, Chuanliang LI. Trace carbon dioxide gas sensor based on resonance photoacoustic spectroscopy[J]. Journal of Atmospheric and Environmental Optics, 2025, 20(2): 168 Copy Citation Text show less
    Schematic diagram of photoacoustic spectrum sensor system
    Fig. 1. Schematic diagram of photoacoustic spectrum sensor system
    Software simulated beam results (a) and the spot distribution of 640 nm laser in the mirror (b)
    Fig. 2. Software simulated beam results (a) and the spot distribution of 640 nm laser in the mirror (b)
    Relationship between photoacoustic signal intensity and experimental conditions. (a) Modulation frequency ; (b) pressure; (c) gas flow; (d) modulation amplitude
    Fig. 3. Relationship between photoacoustic signal intensity and experimental conditions. (a) Modulation frequency ; (b) pressure; (c) gas flow; (d) modulation amplitude
    2f signal of 42 times reflection (red line) and 2f signal of single reflection (black line) (a) and the relationship between photoacoustic signal and CO2 mass concentration (b), the red straight line represents linear fitting
    Fig. 4. 2f signal of 42 times reflection (red line) and 2f signal of single reflection (black line) (a) and the relationship between photoacoustic signal and CO2 mass concentration (b), the red straight line represents linear fitting
    2f signal at 196.42 mg/m-3 CO2 standard gas (a) and long term monitoring of gas mass concentration in the photoacoustic cavity of 500 mg/m-3 CO2 standard gas (b), the illustration is the amplification of 1 h signal
    Fig. 5. 2f signal at 196.42 mg/m-3 CO2 standard gas (a) and long term monitoring of gas mass concentration in the photoacoustic cavity of 500 mg/m-3 CO2 standard gas (b), the illustration is the amplification of 1 h signal
    Zijian YANG, Lin LI, Guqing GUO, Ting GONG, Qiang LIU, Yali TIAN, Xiaocong SUN, Xuanbing QIU, Chuanliang LI. Trace carbon dioxide gas sensor based on resonance photoacoustic spectroscopy[J]. Journal of Atmospheric and Environmental Optics, 2025, 20(2): 168
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