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Proceedings Paper

Efficient small-scale TEA CO2 laser for material surface modification
Author(s): Milan S. Trtica; Biljana M. Gakovic; Bojan B. Radak; Scepan S. Miljanic
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Paper Abstract

An efficient small scale TEA (Transversely Excited Atmospheric) CO2 laser has been considered. The laser was a low flowing, UV preionized, pulsed system. Specific design of the head as well as the electrical circuit ensure the laser operation with high efficiency and reliability. Nonconventional CO2/Y, Y equals N2/H2; H2/He and H2 gas mixtures showed relatively high energy output. CO2/N2/H2 mixture as the most superior one produces output energy and peak power of 220 mJ and 1.40 MW, respectively. High-energy output of the laser was employed for surface modification of austenitic stainless steel AISI 316 and titanium nitride (TiN) coating deposited on the same steel substrate. Used laser peak power densities of 100 and 170 MW/cm2 have induced the morphology changes of AISI 316 steel and TiN coating, respectively.

Paper Details

Date Published: 26 March 2002
PDF: 6 pages
Proc. SPIE 4747, International Conference on Atomic and Molecular Pulsed Lasers IV, (26 March 2002); doi: 10.1117/12.460156
Show Author Affiliations
Milan S. Trtica, Vinca Institute of Nuclear Sciences (FR Yugoslavia)
Biljana M. Gakovic, Vinca Institute of Nuclear Sciences (FR Yugoslavia)
Bojan B. Radak, Vinca Institute of Nuclear Sciences (FR Yugoslavia)
Scepan S. Miljanic, Univ. of Belgrade (FR Yugoslavia)


Published in SPIE Proceedings Vol. 4747:
International Conference on Atomic and Molecular Pulsed Lasers IV

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