Efficient small-scale TEA CO2 laser for material surface modification

Milan S. Trtica; Biljana M. Gakovic; Bojan B. Radak; Scepan S. Miljanic

doi:10.1117/12.460156

26 March 2002 Efficient small-scale TEA CO₂ laser for material surface modification

Milan S. Trtica, Biljana M. Gakovic, Bojan B. Radak, Scepan S. Miljanic

Proceedings Volume 4747, International Conference on Atomic and Molecular Pulsed Lasers IV; (2002) https://doi.org/10.1117/12.460156
Event: International Conference on Atomic and Molecular Pulsed Lasers IV, 2001, Tomsk, Russian Federation

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.

Citation Download Citation

Milan S. Trtica, Biljana M. Gakovic, Bojan B. Radak, and Scepan S. Miljanic "Efficient small-scale TEA CO₂ laser for material surface modification", Proc. SPIE 4747, International Conference on Atomic and Molecular Pulsed Lasers IV, (26 March 2002); https://doi.org/10.1117/12.460156

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