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Proceedings Paper

Femtosecond studies of highly excited electrons and surface modification in metals
Author(s): Kai Dou; B. Irwin; Robert L. Parkhill; Edward T. Knobbe
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Paper Abstract

Interaction of highly excited electrons in nonequilibrium states with the lattice in metals has been studied using femtosecond pulse lasers. Two ablation regimes are identified as the optical and energy penetration by examining the fluence dependence of ablated depth per pulse. Surface structuring and surface compositioning of metal substrates using a femtosecond pulsed laser irradiation is characterized with the SEM images as a function of laser fluence. Laser ablation provides a mechanism to facilitate an achievement of a nano- and microstructuring on the metal surface. Based on our results, ultrashort pulse provides wide competitive range of applications in surface structuring and patterning from nano- to microdimensional scales.

Paper Details

Date Published: 19 February 2003
PDF: 5 pages
Proc. SPIE 4830, Third International Symposium on Laser Precision Microfabrication, (19 February 2003); doi: 10.1117/12.486601
Show Author Affiliations
Kai Dou, Oklahoma State Univ. (United States)
B. Irwin, Sciperio, Inc. (United States)
Robert L. Parkhill, Sciperio, Inc. (United States)
Edward T. Knobbe, Sciperio, Inc. (United States)

Published in SPIE Proceedings Vol. 4830:
Third International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Kojiro F. Kobayashi; Koji Sugioka; Reinhart Poprawe; Henry Helvajian, Editor(s)

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