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Proceedings Paper

Femtosecond technology for precision manufacturing: fundamental and technical aspects
Author(s): Friedrich Dausinger
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Paper Abstract

During the past few years research groups demonstrated the potential of femtosecond pulses for ultra-precise machining. Soon industry became interested in the new technique which promises to get rid of precision deficits occurring when using longer pulses. As possible applications drilling of nozzles, structuring of tribological surfaces and sharpening of diamond tools are considered among others. Initial investigations of such industrial applications soon showed, however, several unexpected quality problems such as formation of recast, ripples and irregular hole shapes even in the femtosecond pulse regime. After describing the problems this contribution will present some progress in fundamental understanding of the ultrafast ablation process. On the basis of this knowledge technical means have been developed allowing to achieve an unprecedented level of accuracy at acceptable expenses. The latter being strongly influenced by the shortness of the laser pulse, a comparison between pico- and femto-second regime will be presented.

Paper Details

Date Published: 19 February 2003
PDF: 8 pages
Proc. SPIE 4830, Third International Symposium on Laser Precision Microfabrication, (19 February 2003); doi: 10.1117/12.486506
Show Author Affiliations
Friedrich Dausinger, Univ. of Stuttgart (Germany)

Published in SPIE Proceedings Vol. 4830:
Third International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Kojiro F. Kobayashi; Koji Sugioka; Reinhart Poprawe; Henry Helvajian, Editor(s)

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