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Laser & Optoelectronics Progress, Volume. 56, Issue 19, 193003(2019)

Analytical Method of Spectral Overlapping Interference Using Laser Absorption Spectroscopy

Li Xu1,2, Zhirong Zhang1,2,3、*, Fengzhong Dong1,2,3, Pengshuai Sun1, Hua Xia1, Runqing Yu1, Zhe Li1, and Qiming Xu4
Author Affiliations
  • 1Key Laboratory of Photon-Devices and Materials Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2School of Environmental Science and Optoelectronic Technology University of Science and Technology of China Hefei, Anhui 230026, China
  • 3Key Laboratory of Environmental Optics & Technology Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences Hefei, Anhui 230031, China
  • 4College of Engineering, Taiwan Yunlin University of Science and Technology, Yunlin, Taiwan 64002, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
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    References (16)
    Cited By (3)
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    Figures & Tables(13)
    Schematic of experiment for laser absorption spectroscopy

    Fig. 1. Schematic of experiment for laser absorption spectroscopy

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    Picture of experimental device for laser absorption spectroscopy

    Fig. 2. Picture of experimental device for laser absorption spectroscopy

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    Absorption lines of NH3, CO2, and H2O when thermodynamic temperature is 296 K. (a) NH3; (b) CO2; (c) H2O

    Fig. 3. Absorption lines of NH3, CO2, and H2O when thermodynamic temperature is 296 K. (a) NH3; (b) CO2; (c) H2O

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    Simulated absorption spectrum of NH3 standard gas with volume fraction of 1.9×10-5

    Fig. 4. Simulated absorption spectrum of NH3 standard gas with volume fraction of 1.9×10-5

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    Simulated absorption spectra under different pressures of NH3 with volume fraction of 1.9×10-5. (a) 0.5 atm; (b) 0.25 atm; (c) 0.1 atm

    Fig. 5. Simulated absorption spectra under different pressures of NH3 with volume fraction of 1.9×10-5. (a) 0.5 atm; (b) 0.25 atm; (c) 0.1 atm

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    Absorption spectra of NH3 with volume fraction of 1.9×10-5 under different pressures

    Fig. 6. Absorption spectra of NH3 with volume fraction of 1.9×10-5 under different pressures

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    Simulated absorption spectra of CH4 with volume fraction of 10-4 under different pressures. (a) 0.1 atm; (b) 0.2 atm; (c) 0.3 atm; (a) 1.0 atm

    Fig. 7. Simulated absorption spectra of CH4 with volume fraction of 10-4 under different pressures. (a) 0.1 atm; (b) 0.2 atm; (c) 0.3 atm; (a) 1.0 atm

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    Experimentally measured absorption spectra of CH4 with volume fraction of 10-4 under different pressures

    Fig. 8. Experimentally measured absorption spectra of CH4 with volume fraction of 10-4 under different pressures

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    Measured absorption spectrum of NH3 with volume fraction of 1.9×10-5 when pressure is 0.18 atm

    Fig. 9. Measured absorption spectrum of NH3 with volume fraction of 1.9×10-5 when pressure is 0.18 atm

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    Fitting of NH3 concentration and its absorbance when pressure is 0.18 atm

    Fig. 10. Fitting of NH3 concentration and its absorbance when pressure is 0.18 atm

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    • Table 1. Absorption line intensity of NH3 standard gas near 6528.8 cm-1 from HITRAN 2012 dataset

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      Table 1. Absorption line intensity of NH3 standard gas near 6528.8 cm-1 from HITRAN 2012 dataset

      Wave number /cm-1Spectral line intensity /(10-21cm-1·molecule-1·cm2)
      6528.76851.174
      6528.77321.174
      6528.89981.350
      6529.19011.230

    • Table 2. Absorption line intensity of CH4 near 6046.9 cm-1 from HITRAN 2012 dataset

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      Table 2. Absorption line intensity of CH4 near 6046.9 cm-1 from HITRAN 2012 dataset

      Wave number /cm-1Spectral line intensity /(10-22cm-1·molecule-1·cm2)
      6046.94257.877
      6046.95169.277
      6046.96351.455

    • Table 3. Maximum absorbance of NH3 with different concentrations under pressure of 0.18 atm

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      Table 3. Maximum absorbance of NH3 with different concentrations under pressure of 0.18 atm

      Volume fraction /10-6Maximum absorbance
      50.00165
      190.00746
      500.01640
      900.02924
      1050.03437
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    Li Xu, Zhirong Zhang, Fengzhong Dong, Pengshuai Sun, Hua Xia, Runqing Yu, Zhe Li, Qiming Xu. Analytical Method of Spectral Overlapping Interference Using Laser Absorption Spectroscopy[J]. Laser & Optoelectronics Progress, 2019, 56(19): 193003

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    Paper Information

    Category: Spectroscopy

    Received: Mar. 12, 2019

    Accepted: Apr. 19, 2019

    Published Online: Oct. 23, 2019

    The Author Email: Zhang Zhirong (zhangzr@aiofm.ac.cn)

    DOI:10.3788/LOP56.193003

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology