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Proceedings Paper

The physics in applications of ultrafast lasers
Author(s): Dirk Wortmann; Martin Reininghaus; Johannes Finger; Claus Dold; Peter Russbueldt; Reinhart Poprawe
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Paper Abstract

High precision and high throughput material processing using ultrashort pulsed laser radiation of high average power requires a detailed understanding of the laser matter interaction on ultrafast time scales. In this paper, we will focus on energy transport mechanisms based on the two-temperature-model and the resulting ablation regimes for single pulses. Heat accumulation at high pulse repetition rates and spatial pulse overlap will be discussed. Additional, a novel nonthermal ablation mechanism for graphite and corresponding materials will be presented.

Paper Details

Date Published: 11 October 2011
PDF: 6 pages
Proc. SPIE 8306, Photonics, Devices, and Systems V, 830603 (11 October 2011); doi: 10.1117/12.911309
Show Author Affiliations
Dirk Wortmann, RWTH Aachen Univ. (Germany)
Martin Reininghaus, RWTH Aachen Univ. (Germany)
Johannes Finger, RWTH Aachen Univ. (Germany)
Claus Dold, Inspire AG (Switzerland)
Peter Russbueldt, Fraunhofer Institute for Laser Technology (Germany)
Reinhart Poprawe, RWTH Aachen Univ. (Germany)
Fraunhofer Institute for Laser Technology (Germany)

Published in SPIE Proceedings Vol. 8306:
Photonics, Devices, and Systems V
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

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