Femtosecond technology for precision manufacturing: fundamental and technical aspects

Friedrich Dausinger

doi:10.1117/12.486506

19 February 2003 Femtosecond technology for precision manufacturing: fundamental and technical aspects

Friedrich Dausinger

Proceedings Volume 4830, Third International Symposium on Laser Precision Microfabrication; (2003) https://doi.org/10.1117/12.486506
Event: LAMP 2002: International Congress on Laser Advanced Materials Processing, 2002, Osaka, Japan

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.

Citation Download Citation

Friedrich Dausinger "Femtosecond technology for precision manufacturing: fundamental and technical aspects", Proc. SPIE 4830, Third International Symposium on Laser Precision Microfabrication, (19 February 2003); https://doi.org/10.1117/12.486506

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