Heat accumulation in ultra-short pulsed scanning laser ablation of metals
Top Cited Papers
- 16 January 2015
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 23 (2), 1035-1043
- https://doi.org/10.1364/oe.23.001035
Abstract
High average laser powers can have a serious adverse impact on the ablation quality in ultra-short pulsed laser material processing of metals. With respect to the scanning speed, a sharp transition between a smooth, reflective and an uneven, dark ablated surface is observed. Investigating the influence of the sample temperature, it is experimentally shown that this effect stems from heat accumulation. In a numerical heat flow simulation, the critical scanning speed indicating the change in ablation quality is determined in good agreement with the experimental data.This publication has 11 references indexed in Scilit:
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