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Rate dependence of short-pulse laser ablation of metals in air and vacuum

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Abstract.

Ablation rates of aluminum and stainless steel are studied as a function of fluence, hole depth, pulse duration and ambient pressure (air vs vacuum). We find a weak rate dependence on pulse duration from 150 fs to 500 ps, and a strong rate dependence on hole depth due to surface roughness. Machining in air plays an important role in deep holes, but has a weaker influence on initial surface ablation rates. Oxidation greatly reduces drilling rates for deep holes in aluminum.

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Authors and Affiliations

  1. Lawrence Livermore National Laboratory, P.O. Box 808, L-477, Livermore, CA 94550, USA, , , , , , US

    A.E. Wynne & B.C. Stuart

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  1. A.E. Wynne
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  2. B.C. Stuart
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Received: 26 December 2001 / Accepted: 9 July 2002 / Published online: 4 November 2002

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Wynne, A., Stuart, B. Rate dependence of short-pulse laser ablation of metals in air and vacuum . Appl Phys A 76, 373–378 (2003). https://doi.org/10.1007/s00339-002-1823-8

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  • DOI: https://doi.org/10.1007/s00339-002-1823-8

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