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Proceedings Paper

Femtosecond pulse laser ablation and surface modification of aluminum alloy 2024
Author(s): Kai Dou; Robert L. Parkhill; Edward T. Knobbe
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Paper Abstract

Laser processing of metallic surfaces using a fs pulse laser has bene shown to produce novel effects. We demonstrate nanoscaled surface texturing effects of aluminum alloy 2024 using femtosecond pulse laser irradiation. The laser source is a 248-nm excimer laser with a pulse width of 500fs delivering a laser output fluence in a range from 0.02 to 10 J/cm2. The micrographs of the scanning electron microscopy have been characterized as a function of incident laser fluence. Results indicate that the surface futures, ranging from nanoscale to microns, can be developed through variation in fluence intensities. Advantages of femtosecond pulse laser for precise metal microstructuring and physical mechanisms for ultrashort pulse laser ablation have been discussed.

Paper Details

Date Published: 4 May 2000
PDF: 8 pages
Proc. SPIE 3931, Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications, (4 May 2000); doi: 10.1117/12.384297
Show Author Affiliations
Kai Dou, Oklahoma State Univ. (United States)
Robert L. Parkhill, Air Force Research Lab. (United States)
Edward T. Knobbe, Oklahoma State Univ. (United States)

Published in SPIE Proceedings Vol. 3931:
Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications
Santanu Basu; Santanu Basu; Steven J. Davis; Ernest A. Dorko, Editor(s)

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