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Processing of metals by double pulses with short laser pulses

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Abstract

Experimental results related to the influence of time delayed pulses for ablation efficiency with short multi pulses (pulse duration of 5 ps) are reported. A significant improvement of the micro structuring quality at relatively high fluence regime in metals is obtained. Less removed or recast matter is observed and the processed surface appears to be smoother with better roughness. Ablation depths and burr heights are compared for single pulses and double pulses in steel, Al and Cu as a function of scans number. Best results are obtained for weak time delays, typically less than 1 ps.

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Authors and Affiliations

  1. JenLab GmbH, Schillerstrasse 1, 07745, Jena, Germany

    R. Le Harzic

  2. Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70569, Stuttgart, Germany

    D. Breitling, S. Sommer & F. Dausinger

  3. Forschungsgesellschaft für Strahlwerkzeuge mbH (FGSW), Nobelstrasse 15, 70569, Stuttgart, Germany

    C. Föhl

  4. Fraunhofer Institute of Biomedical Technology (IBMT), Ensheimer Strasse 48, 66386, St. Ingbert, Germany

    K. König

  5. Laboratoire Traitement du Signal et Instrumentation (TSI), UMR CNRS 5516, Bat F, 10 rue Barrouin, 42000, Saint Etienne, France

    E. Audouard

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  1. R. Le Harzic
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  2. D. Breitling
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  3. S. Sommer
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  4. C. Föhl
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  5. K. König
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  6. F. Dausinger
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  7. E. Audouard
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Correspondence to R. Le Harzic.

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PACS

79.20.Ds; 42.62.Cf; 81.65.Cf

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Le Harzic, R., Breitling, D., Sommer, S. et al. Processing of metals by double pulses with short laser pulses. Appl. Phys. A 81, 1121–1125 (2005). https://doi.org/10.1007/s00339-005-3307-0

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  • DOI: https://doi.org/10.1007/s00339-005-3307-0

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