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Proceedings Paper

Optical emission study of the plasma plume dynamics during excimer laser ablation of carbon in nitrogen atmosphere
Author(s): Guangsheng Fu; Wei Yu; Shu-Fang Wang; Xiao-Wei Li; Lianshui Zhang; Li Han
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Paper Abstract

In this paper, the optical emission spectroscopy (OES) is used to study the plasma plume dynamics during XeCl laser ablation of carbon in nitrogen atmosphere. The optical emission spectrum of the plasma is mainly continuous emission near the target in its early formation stage. The discrete spectra can be detected 20ns later and reach the maximum at about 60-100ns. The temporal and spatial evolution of such characteristic peaks as C, C+ and C2 emission lines exhibit different features. The OES results show that the plasma processing dynamics during excimer laser ablated carbon target is :the plasma is produced during the carbon absorbing the laser energy, the particles in the plasma continue their collision process after the laser pulse being over, which make the plasma ionized efficiently, and then the plasma continue expanding, declining and quenching. The creation and evolution mechanism of the active species is also discussed.

Paper Details

Date Published: 9 October 2000
PDF: 5 pages
Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); doi: 10.1117/12.402653
Show Author Affiliations
Guangsheng Fu, Hebei Univ. (China)
Wei Yu, Hebei Univ. (China)
Shu-Fang Wang, Hebei Univ. (China)
Xiao-Wei Li, Hebei Univ. (China)
Lianshui Zhang, Hebei Univ. (China)
Li Han, Hebei Univ. (China)

Published in SPIE Proceedings Vol. 4221:
Optical Measurement and Nondestructive Testing: Techniques and Applications
FeiJun Song; Frank Chen; Michael Y.Y. Hung; H.M. Shang, Editor(s)

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