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Titanium surface modification using femtosecond laser with 1013–1015 W/cm2 intensity in vacuum

Published online by Cambridge University Press:  27 November 2012

M. Trtica
Affiliation:
VINCA Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Belgrade, Serbia
D. Batani
Affiliation:
Centre Lasers Intenses et Applications, Université Bordeaux, Talence cedex, France
R. Redaelli
Affiliation:
Universita degli Studi Milano Bicocca, Dipartimento di Fisica “G. Occhialini,” Milano, Italy
J. Limpouch
Affiliation:
Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Praha, Czech Republic
V. Kmetik
Affiliation:
Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Praha, Czech Republic
J. Ciganovic
Affiliation:
VINCA Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Belgrade, Serbia
J. Stasic*
Affiliation:
VINCA Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Belgrade, Serbia
B. Gakovic
Affiliation:
VINCA Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Belgrade, Serbia
M. Momcilovic
Affiliation:
VINCA Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Belgrade, Serbia
*
Address correspondence and reprint requests to: J. Stasic, VINCA Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia. E-mail: jelsta@vinca.rs

Abstract

The response of titanium surface irradiated with high intensity (1013 – 1015 W/cm2) Ti:sapphire laser was studied in vacuum. Most of the reported investigations were conducted with nano- to femtosecond lasers in gas atmospheres while the studies of titanium surface interacting with femtosecond laser in vacuum are scarce. The laser employed in our experiment was operating at 800 nm wavelength and pulse duration of 60 fs in single pulse regime. The observed surface changes and phenomena are (1) creation of craters, (2) formation of periodic surface structures at the reduced intensity, and (3) occurrence of plasma in front the target. Since microstructuring of titanium is very interesting in many areas (industry, medicine), it can be concluded from this study that the reported laser intensities can effectively be applied for micromachining of the titanium surface (increasing the roughness, formation of parallel periodic surface structures etc.).

Type
Research Article
Copyright
Copyright © Cambridge University Press 2012

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