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Proceedings Paper

Ablation of metals by ultrashort laser pulses
Author(s): Nikolay N. Nedialkov; Petar A. Atanasov; Detlef Breitling; G. Heusel; Friedrich Dausinger
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Paper Abstract

Ablation of Fe, Al, Ni, and Cu by laser pulses at durations of 0.1, 1, and 5 ps is investigated experimentally. The laser fluence used vaires from below the ablation threshold up to 100 J/cm2. The ablation rate depends on the laser pulse duration at laser fluences above several J/cm2 as the shorter pulse produces higher ablation rate. A change of the ablation regime with the laser fluence increase is also observed. The presence of molten material is clearly expressed at fluences above 10 J/cm2 for all pulse durations used. These effects can be referred to the contribution of the electron heat diffusion in the distribution of the absorbed energy. The traces of solidified molten material suggest for realizations of melt ejection mechanism of ablation.

Paper Details

Date Published: 22 April 2005
PDF: 5 pages
Proc. SPIE 5830, 13th International School on Quantum Electronics: Laser Physics and Applications, (22 April 2005); doi: 10.1117/12.617375
Show Author Affiliations
Nikolay N. Nedialkov, Institute of Electronics (Bulgaria)
Petar A. Atanasov, Institute of Electronics (Bulgaria)
Detlef Breitling, Univ. Stuttgart (Germany)
G. Heusel, Univ. Stuttgart (Germany)
Friedrich Dausinger, Univ. Stuttgart (Germany)


Published in SPIE Proceedings Vol. 5830:
13th International School on Quantum Electronics: Laser Physics and Applications
Peter A. Atanasov; Sanka V. Gateva; Lachezar A. Avramov; Alexander A. Serafetinides, Editor(s)

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