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Proceedings Paper

Femtosecond and nanosecond laser removal of anodic oxide layers from aluminum
Author(s): Grazia Daminelli; Peter Meja; Anna Cortona; Joerg Krueger; Michel L. Autric; Wolfgang Kautek
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Paper Abstract

Femtosecond and nanosecond laser ablation and delamination of anodic oxide layers on an aluminium alloy were investigated. Laser wavelengths of 800 nm (125 fs pulse duration) and 532 nm (7 ns), respectively, and two oxide layers with thicknesses of 70 micrometers (opaque) and 30 micrometers (transparent) were considered. Laser-induced shock waves measured by means of a microphone provided an in-situ diagnostic tool for the monitoring of the coating removal process. The transparent anodic oxides showed contrasting ablation mechanisms in the nanosecond and femtosecond pulse duration regime. Nanosecond pulses led to spallation, whereas femtosecond treatment resulted in ablation.

Paper Details

Date Published: 13 September 2002
PDF: 8 pages
Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); doi: 10.1117/12.482091
Show Author Affiliations
Grazia Daminelli, Federal Institute for Materials Research and Testing (Germany)
Peter Meja, Univ. Aix Marseilles (France)
Anna Cortona, Federal Institute for Materials Research and Testing and Lambda Physik AG (Germany)
Joerg Krueger, Federal Institute for Materials Research and Testing (Germany)
Michel L. Autric, Univ. Aix Marseilles (France)
Wolfgang Kautek, Federal Institute for Materials Research and Testing (Germany)

Published in SPIE Proceedings Vol. 4760:
High-Power Laser Ablation IV
Claude R. Phipps, Editor(s)

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