The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO<sub> 2</sub> Laser-Induced Shock-Wave Plasma

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  • Suliyanti Maria M.
    Laser Laboratory, Research Center and Development for Applied Physics, Indonesia Institute of Sciences, Serpong, Indonesia
  • Hedwig Rinda
    Applied Spectroscopy Laboratory, Graduate Program for Optoelectro–techniques and Laser Application, University of Indonesia, 4 Salemba Raya, Jakarta 10430, Indonesia
  • Kurniawan Hendrik
    Applied Spectroscopy Laboratory, Graduate Program for Optoelectro–techniques and Laser Application, University of Indonesia, 4 Salemba Raya, Jakarta 10430, Indonesia
  • Kagawa Kiichiro
    Department of Physics, Faculty of Education, Fukui University, 3–9–1 Bunkyou, Fukui 910, Japan

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タイトル別名
  • The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO2 Laser-Induced Shock-Wave Plasma.
  • Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO2 Laser-Induced Shock-Wave Plasma

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A transversely excited atmospheric pressure (TEA) CO2 laser pulse (50 mJ, 100 ns) was focused on silicon grease which is painted on a copper plate as a subtarget with a power density of 6 GW/cm2 under reduced pressure. The comparison of the characteristics of the induced laser plasma between two cases, with subtarget and without subtarget was made. It is proved that the emission spectrum assigned to the silicon atom can be detected only for the case with the subtarget. It is also proved that in the absence of the subtarget, the gushing speed of the atom is very low, while for the case with subtarget, the gushing speed of atoms becomes very fast. It is shown that the setting of subtarget is very effective for producing laser-induced shock wave plasma and it is very effective for the realize quantitative analysis of a soft material.

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