Effect of high repetition rate on pulsed laser ablation in gas environment

P. A. Pivovarov; S. M. Klimentov; V. I. Konov; D. Breitling; F. Dausinger

doi:10.1117/12.675016

26 April 2006 Effect of high repetition rate on pulsed laser ablation in gas environment

P. A. Pivovarov, S. M. Klimentov, V. I. Konov, D. Breitling, F. Dausinger

Proceedings Volume 6161, International Conference on Lasers, Applications, and Technologies 2005: Laser-Assisted Micro- and Nanotechnologies; 616109 (2006) https://doi.org/10.1117/12.675016
Event: International Conference on Lasers, Applications, and Technologies 2005, 2005, St. Petersburg, Russian Federation

Abstract

Pulsed laser drilling in steel was explored in a wide range of repetition rates (up to 200 kHz) at variable pressure of the ambient air. A critical repetition rate was established, exceeding of which drastically increased productivity of ablative drilling. The phenomenon was attributed to formation of a long-living domain (> 100 μs) with hot rarefied atmosphere in the vicinity of the ablated spot or inside the drilled channel. This rarefication was shown to reduce the plasma screening effect, which allows creation of quasi-vacuum conditions for laser ablative technology avoiding vacuum-pumped facilities.

Citation Download Citation

P. A. Pivovarov, S. M. Klimentov, V. I. Konov, D. Breitling, and F. Dausinger "Effect of high repetition rate on pulsed laser ablation in gas environment", Proc. SPIE 6161, International Conference on Lasers, Applications, and Technologies 2005: Laser-Assisted Micro- and Nanotechnologies, 616109 (26 April 2006); https://doi.org/10.1117/12.675016

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