Morphology of femtosecond-laser-ablated borosilicate glass surfaces
- 13 October 2003
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (15) , 3030-3032
- https://doi.org/10.1063/1.1619560
Abstract
We study the morphology of borosilicate glass surface machined by femtosecond laser pulses. Our observations show that a thin rim is formed around ablated craters after a single laser pulse. When multiple laser pulses are overlapped, the crater rims also overlap and produce a surface roughness. The rim appears to be a resolidified splash from a molten layer generated during the ablation process. We estimate that this molten layer is a few micrometers thick and exists for a few microseconds. During this melt lifetime, forces acting on the molten layer move it from the center to the edge of the crater.Keywords
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