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Model and computer simulation of nanosecond laser material ablation

Dumitru, G. ; Romano, V. ; Weber, H.P.

In: Applied Physics A, 2004, vol. 79, no. 4-6, p. 1225-1228

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    Titre
    • Model and computer simulation of nanosecond laser material ablation
    Auteur
    • Dumitru, G.. University of Applied Sciences Aargau, Steinacker Str. 5, 5210, Windisch, Switzerland
    • Romano, V.. Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
    • Weber, H.P.. Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Applied Physics A, 2004, vol. 79, no. 4-6, p. 1225-1228. Springer Berlin Heidelberg; www.springer.de
    Autre version électronique
    Classification
    • Technologie, Sciences de l'ingénieur
    Identifiant OAI-PMH
    • oai:doc.rero.ch:319239
    Summary
    A computer model to simulate the evolution of parameters describing laser ablation processes was developed. The absorbed laser energy, the heat diffusion, the phase transformations and the shielding effect of the ablated material were taken into account. The temporal development of the ablated volume, pore depth and extension of the melt zone were calculated for single pulses of 500, 100, 20, 5 and 1ns. Simulations were performed for pulse energies of 50μJ and spot diameters of 10μm. From temporal evolution curves of the ablated volumes, the stoppage of the ablation process was evidenced before the end of the processing pulse. Comments with respect to optimal pulse duration (in the ns regime) are also formulated