Dynamics of Femtosecond Pulsed Laser Induced Ti Plasmas under Different Pressures

Authors

  • Dong Liu School of Physics and Electronics, Shandong Normal University, Jinan, 250014, the People’s Republic of China
  • Chuan-Song Chen School of Physics and Electronics, Shandong Normal University, Jinan, 250014, the People’s Republic of China
  • Xun Gao School of Science, Changchun University of Science and Technology, Changchun, 130022, the People’s Republic of China
  • Jing-Quan Lin School of Science, Changchun University of Science and Technology, Changchun, 130022, the People’s Republic of China
  • Bao-Yuan Man School of Physics and Electronics, Shandong Normal University, Jinan, 250014, the People’s Republic of China
  • Mei Liu School of Physics and Electronics, Shandong Normal University, Jinan, 250014, the People’s Republic of China
  • Yan-Na Su School of Physics and Electronics, Shandong Normal University, Jinan, 250014, the People’s Republic of China
  • Fei-Fei Li School of Physics and Electronics, Shandong Normal University, Jinan, 250014, the People’s Republic of China

DOI:

https://doi.org/10.4208/jams.090915.101215a

Keywords:

Femtosecond laser ablation, Two temperature model, Laser induced breakdown spectroscopy.

Abstract

The femtosecond laser ablation process and induced breakdown spectroscopy of transition metal Ti in air background has been investigated systematically. The ablation process is simulated by means of a three-dimensional two temperature model (3D-TTM). The time-resolved spectroscopy is employed to determine the characteristics of plasma during its evolution. The time-of-flight spectroscopy (TOFS) is also used to characterize the plasma expansion. The evolution behaviors of the plasma and its spectral characteristics have been analyzed as a function of pressure. It is shown that the component, expansion behavior and characteristics of the plasma have strong pressure dependences. The results are discussed in terms of the interaction mechanisms between ambient air and plasma species.

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Published

2015-06-01

Issue

Vol. 6 No. 4 (2015)

Section

Articles