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Acta Optica Sinica, Volume. 41, Issue 21, 2130001(2021)

Spatial Characteristics of Spectral Intensity of Laser Induced Plasma

Chenwei Sun1,2, Yang Bu1,2、*, Yuanhang Wang1,2, Fang Wu1,2, Yachao Cai1,3, and Xiangzhao Wang1,2
Author Affiliations
  • 1Laboratory of Information Optics and Opto-Electronic Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Department of Physics, Shanghai University, Shanghai 200444, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (21)
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    References (21)
    Cited By (5)
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    Paper Information
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    Figures & Tables(21)
    Schematic of radiative transfer acquisition

    Fig. 1. Schematic of radiative transfer acquisition

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    Schematic of geometric model

    Fig. 2. Schematic of geometric model

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    Simulation spectrum of aluminum target in 391－399 nm wavelength range

    Fig. 3. Simulation spectrum of aluminum target in 391－399 nm wavelength range

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    Spatial distributions of particle density and electron temperature in laser－induced plasma for each incident angle. (a)(b) 0°；(c)(d) 30°；(e)(f) 45°；(g)(h) 60°

    Fig. 4. Spatial distributions of particle density and electron temperature in laser－induced plasma for each incident angle. (a)(b) 0°；(c)(d) 30°；(e)(f) 45°；(g)(h) 60°

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    Spectral intensity of laser－induced plasma for each incident angle versus detection angle at Al 396.1 nm and 1000 ns delay

    Fig. 5. Spectral intensity of laser－induced plasma for each incident angle versus detection angle at Al 396.1 nm and 1000 ns delay

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    Spectral intensity of laser－induced plasma for each incident angle versus detection angle at Al 396.1 nm and 100 ns delay

    Fig. 6. Spectral intensity of laser－induced plasma for each incident angle versus detection angle at Al 396.1 nm and 100 ns delay

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    Spectral intensity of laser－induced plasma for each incident angle versus detection angle at Al 396.1 nm and 500 ns delay

    Fig. 7. Spectral intensity of laser－induced plasma for each incident angle versus detection angle at Al 396.1 nm and 500 ns delay

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    Spatial distribution of particle density and electron temperature in laser－induced plasma for each wavelength. (a)(b) 266 nm; (c)(d) 532 nm; (e)(f) 1064 nm

    Fig. 8. Spatial distribution of particle density and electron temperature in laser－induced plasma for each wavelength. (a)(b) 266 nm; (c)(d) 532 nm; (e)(f) 1064 nm

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    Spectral intensity of laser－induced plasma for each wavelength versus detection angle at Al 396.1 nm and 1000 ns delay

    Fig. 9. Spectral intensity of laser－induced plasma for each wavelength versus detection angle at Al 396.1 nm and 1000 ns delay

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    Spectral intensity of laser－induced plasma for each wavelength versus detection angle at Al 396.1 nm and 100 ns delay

    Fig. 10. Spectral intensity of laser－induced plasma for each wavelength versus detection angle at Al 396.1 nm and 100 ns delay

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    Spectral intensity of laser－induced plasma for each wavelength versus detection angle at Al 396.1 nm and 500 ns delay

    Fig. 11. Spectral intensity of laser－induced plasma for each wavelength versus detection angle at Al 396.1 nm and 500 ns delay

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    Physical drawing of LIBS system

    Fig. 12. Physical drawing of LIBS system

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    Experimental spectrogram

    Fig. 13. Experimental spectrogram

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    Spectral intensities at left and right sides of plasma excited by laser with incident angle of 0° versus detection angle at Al 396.1 nm

    Fig. 14. Spectral intensities at left and right sides of plasma excited by laser with incident angle of 0° versus detection angle at Al 396.1 nm

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    Spectral intensity of plasma excited by incident lasers with different incident angles at Al 396.1 nm. (a) 0°；(b) 30°；(c) 45°；(d) 60°

    Fig. 15. Spectral intensity of plasma excited by incident lasers with different incident angles at Al 396.1 nm. (a) 0°；(b) 30°；(c) 45°；(d) 60°

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    Spectral intensity of plasma excited by 0° laser versus detection angle under different delay conditions. (a) 100 ns; (b) 500 ns

    Fig. 16. Spectral intensity of plasma excited by 0° laser versus detection angle under different delay conditions. (a) 100 ns; (b) 500 ns

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    Spectral intensity of plasma at Al 396.1 nm versus detection angle

    Fig. 17. Spectral intensity of plasma at Al 396.1 nm versus detection angle

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    • Table 1. Peak intensity value of characteristic spectral line of laser induced plasma for each incident angle

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      Table 1. Peak intensity value of characteristic spectral line of laser induced plasma for each incident angle

      Laser incident angle /(°)Collected by single pointCollected by lens
      Peak position /(°)Peak intensity / (10－4 J·cm－2)Peak position /(°)Peak intensity / (10－4 J·cm－2)
      002.64±111.94
      30－111.93－51.90
      45－51.9701.47
      60－91.7700.98

    • Table 2. Peak intensity vale of characteristic spectral line of laser－induced plasma for each incident angle collected by lens

      View table

      Table 2. Peak intensity vale of characteristic spectral line of laser－induced plasma for each incident angle collected by lens

      Laser incident angle /(°)Delay time of 100 nsDelay time of 500 ns
      Peak position /(°)Peak intensity / (10－4 J·cm－2)Peak position /(°)Peak intensity / (10－4 J·cm－2)
      0±412.16±123.31
      30－441.21－252.53
      45－440.82－242.01
      60－360.5301.56

    • Table 3. Peak intensity of characteristic spectral line of laser induced plasma for each wavelength

      View table

      Table 3. Peak intensity of characteristic spectral line of laser induced plasma for each wavelength

      Laser wavelength /nmCollected by single pointCollected by lens
      Peak position /(°)Peak intensity / (10－4 J·cm－2)Peak position /(°)Peak intensity / (10－4 J·cm－2)
      26602.20±111.50
      53202.69±231.91
      106402.64±111.82

    • Table 4. Peak intensity value of characteristic spectral line of laser－induced plasma for each wavelength collected by lens

      View table

      Table 4. Peak intensity value of characteristic spectral line of laser－induced plasma for each wavelength collected by lens

      Laser wavelength /nmDelay time of 100 nsDelay time of 500 ns
      Peak position /(°)Peak intensity / (10－3 J·cm－2)Peak position /(°)Peak intensity / (10－3 J·cm－2)
      266±390.96±122.03
      532±391.21±302.77
      1064±412.16±123.13
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    Chenwei Sun, Yang Bu, Yuanhang Wang, Fang Wu, Yachao Cai, Xiangzhao Wang. Spatial Characteristics of Spectral Intensity of Laser Induced Plasma[J]. Acta Optica Sinica, 2021, 41(21): 2130001

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    Paper Information

    Category: Spectroscopy

    Received: Apr. 6, 2021

    Accepted: May. 24, 2021

    Published Online: Oct. 29, 2021

    The Author Email: Bu Yang (buyang@siom.ac.cn)

    DOI:10.3788/AOS202141.2130001

    Topics

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