Filament-induced remote surface ablation for long range laser-induced breakdown spectroscopy operation

被引:93
作者
Rohwetter, P
Stelmaszczyk, K
Wöste, L
Ackermann, R
Méjean, G
Salmon, E
Kasparian, J
Yu, J
Wolf, JP
机构
[1] Univ Lyon 1, UMR CNRS 5579, Lab Spect Ion & Mol, F-69622 Villeurbanne, France
[2] Free Univ Berlin, Fachbereich Phys, Inst Experimentalphys, D-14195 Berlin, Germany
关键词
laser filaments; remote laser-induced surface ablation; remote laser-induced breakdown spectroscopy;
D O I
10.1016/j.sab.2005.03.017
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
We demonstrate laser induced ablation and plasma line emission from a metallic target at distances up to 180 in from the laser, using filaments (self-guided propagation structures similar to 100 mu m in diameter and similar to 5 x 10(13) W/cm(2) in intensity) appearing as femtosecond and terawatt laser pulses propagating in air. The remarkable property of filaments to propagate over a long distance independently of the diffraction limit opens the frontier to long range operation of the laser-induced breakdown spectroscopy technique. We call this special configuration of remote laser-induced breakdown spectroscopy "remote filament-induced breakdown spectroscopy". Our results show main features of filament-induced ablation on the surface of a metallic sample and associated plasma emission. Our experimental data allow us to estimate requirements for the detection system needed for kilometer-range remote filament- induced breakdown spectroscopy experiment. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:1025 / 1033
页数:9
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