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Chinese Journal of Lasers, Volume. 48, Issue 24, 2411001(2021)

Signal Enhancement in Target-Enhanced Orthogonal Double-Pulse Laser-Induced Breakdown Spectroscopy

Zehao Lin, Runhua Li, Yinhua Jiang, and Yuqi Chen*
Author Affiliations
  • School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, China
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    Figures&Tables (8)
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    References (19)
    Cited By (5)
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    Figures & Tables(8)
    Diagram of the experimental setup

    Fig. 1. Diagram of the experimental setup

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    Temporal profiles of plasma emission of brass sample

    Fig. 2. Temporal profiles of plasma emission of brass sample

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    Plot of signal intensity of Cu I 324.75 nm in target-enhanced orthogonal DP-LIBS versus delay time between two pulses

    Fig. 3. Plot of signal intensity of Cu I 324.75 nm in target-enhanced orthogonal DP-LIBS versus delay time between two pulses

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    Emission spectra of plasma in SP-LIBS, orthogonal DP-LIBS, and target-enhanced orthogonal DP-LIBS

    Fig. 4. Emission spectra of plasma in SP-LIBS, orthogonal DP-LIBS, and target-enhanced orthogonal DP-LIBS

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    Boltzmann plots of copper element for brass copper sample

    Fig. 5. Boltzmann plots of copper element for brass copper sample

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    Lorentz fitting diagrams of Cu at 324.75 nm spectral line. (a) Orthogonal DP-LIBS; (b)target-enhanced orthogonal DP-LIBS

    Fig. 6. Lorentz fitting diagrams of Cu at 324.75 nm spectral line. (a) Orthogonal DP-LIBS; (b)target-enhanced orthogonal DP-LIBS

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    • Table 1. Enhancement factor of plasma emission intensity obtained in target-enhanced orthogonal DP-LIBS

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      Table 1. Enhancement factor of plasma emission intensity obtained in target-enhanced orthogonal DP-LIBS

      Analytical lineEnhancement factor
      Compared with SP-LIBSCompared with orthogonal DP-LIBS
      Bi I 306.77 nm44.06.3
      Cu I 324.75 nm114.06.0
      Sn I 317.5 nm24.06.9
      Zn I 334.50 nm146.010.4
      Fe I 404.58 nm128.07.9

    • Table 2. Spectroscopic parameters of copper atomic lines for plasma temperature calculation

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      Table 2. Spectroscopic parameters of copper atomic lines for plasma temperature calculation

      Wavelengthλ /nmTransition probabilityAij /(108 s-1)Degeneracy of the upper level giEnergy of the upper level Ei /eV
      330.79 (Cu I)1.38128.82
      465.11 (Cu I)0.3887.74
      510.55 (Cu I)0.0243.82
      515.32 (Cu I)0.6046.19
      521.82 (Cu I)0.7566.19
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    Zehao Lin, Runhua Li, Yinhua Jiang, Yuqi Chen. Signal Enhancement in Target-Enhanced Orthogonal Double-Pulse Laser-Induced Breakdown Spectroscopy[J]. Chinese Journal of Lasers, 2021, 48(24): 2411001

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    Paper Information

    Category: spectroscopy

    Received: Apr. 14, 2021

    Accepted: May. 24, 2021

    Published Online: Nov. 22, 2021

    The Author Email: Chen Yuqi (chenyuqi@scut.edu.cn)

    DOI:10.3788/CJL202148.2411001

    Topics

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