Surface Microstructures obtained by Femtosecond Laser Pulses

M.N.W. Groenendijk, J. Meijer

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    After machining of steel by femtosecond laser ablation unexpected surface structures are found at the bottom of the machined area. Periodic sub-micrometer spaced ripple patterns are formed after irradiation with several pulses. At a certain number of incident pulses the ripples starts to break up resulting in a more chaotic structure. The point of transition and the morphology of the chaotic structure depend on several parameters. The paper describes the ripple formation and the resulting surface structures dependent on the repetition frequency of the laser and the number of incident pulses.
    Original languageUndefined
    Pages (from-to)183-186
    Number of pages4
    JournalCIRP annals : manufacturing technology
    Issue number007-8506
    Publication statusPublished - 21 Aug 2006


    • Micro machining
    • METIS-232372
    • Laser
    • Surface texture
    • IR-73042

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