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Proceedings Paper

Ultrashort pulse lasers: new aspects of materials interaction
Author(s): Wolfgang Kautek; P. Rudolph; Grazia Daminelli; Andreas Hertwig; Sven Martin; J. Bonse; Joerg Krueger
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Paper Abstract

The authors' research on the laser interaction with semiconductors, high-performance ceramics, oxides, and glasses with pulse durations of 30 fs and 130 fs is reviewed. Near-ablation threshold investigations were concerned with the generation of periodic nanostructures and their correlation with physico-chemical properties of the solid phase such as e.g. the material-dependent surface energy. Molecular dynamic modeling in the sub-picosecond time domain considered ultrafast opto-electronic processes triggering surface reorganization reactions. Fluid containment of solid interfaces showed strong influence on the resulting micro- and nanostructures due to its drastic reduction of the surface energy. The phenomena are discussed in respect to the minimization of the surface free energy in dependence of material composition and interfacial structure.

Paper Details

Date Published: 20 September 2004
PDF: 12 pages
Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); doi: 10.1117/12.548244
Show Author Affiliations
Wolfgang Kautek, Federal Institute for Materials Research and Testing (Germany)
P. Rudolph, Federal Institute for Materials Research and Testing (Germany)
Grazia Daminelli, Federal Institute for Materials Research and Testing (Germany)
Andreas Hertwig, Federal Institute for Materials Research and Testing (Germany)
Sven Martin, Federal Institute for Materials Research and Testing (Germany)
J. Bonse, Federal Institute for Materials Research and Testing (Germany)
Joerg Krueger, Federal Institute for Materials Research and Testing (Germany)


Published in SPIE Proceedings Vol. 5448:
High-Power Laser Ablation V
Claude R. Phipps, Editor(s)

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