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Proceedings Paper

Femtosecond, picosecond, and nanosecond laser microablation: laser plasma and crater investigation
Author(s): Alexandre F. Semerok; Beatrice Salle; Jean-Luc Lacour; J.-F. Wagner; Guillaume Petite; Olivier Gobert; Pierre Meynadier; Michel Perdrix
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Paper Abstract

Crater shapes and plasma plume expansion in the interaction of sharply focused laser beams with metals in air at atmospheric pressure were studied. Laser ablation efficiencies and rates of plasma expansion were obtained. The best ablation efficiency was observed with femtosecond laser pulses. It was found that for nanosecond pulses the laser beam absorption, its scattering and reflection in plasma were the limiting factors for efficient laser ablation and precise material sampling with sharply focused laser beams. The experimental results obtained were analyzed with relation to different theoretical models of laser ablation.

Paper Details

Date Published: 23 April 2001
PDF: 6 pages
Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); doi: 10.1117/12.425562
Show Author Affiliations
Alexandre F. Semerok, CEA-Saclay (France)
Beatrice Salle, CEA-Saclay (France)
Jean-Luc Lacour, CEA-Saclay (France)
J.-F. Wagner, CEA-Saclay (France)
Guillaume Petite, Ecole Polytechnique (France)
Olivier Gobert, CEA-Saclay (France)
Pierre Meynadier, CEA-Saclay (France)
Michel Perdrix, CEA-Saclay (France)

Published in SPIE Proceedings Vol. 4424:
ECLIM 2000: 26th European Conference on Laser Interaction with Matter
Milan Kalal; Karel Rohlena; Milan Sinor, Editor(s)

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