Laser drilling is a processing technology applicable for creating holes in various materials. By combining an ultrashort pulsed laser with a helical drilling optics, it is possible to produce high-quality holes with sharp, burr-free edges in a large variety of borehole geometries. To master this highly flexible process which is determined by a multitude of variables, a mathematical description of the problem is advantageous. A simulation model is presented for calculating the final borehole geometry for a given set of laser, process, and material parameters. The model was validated by comparison to boreholes drilled into four different materials: stainless steel, copper, silicon, and aluminum oxide ceramic. By inserting literature values for the refractive index and the ablation threshold fluence, a good agreement between model and experiment can be achieved for holes of different shape and size.
%0 Journal Article
%1 noauthororeditor
%A Kroschel, Alexander
%A Michalowski, Andreas
%A Bauer, Franziska
%A Graf, Thomas
%D 2018
%J JLMN-Journal of Laser Micro/Nanoengineering
%K drilling laser myown peersend:unibiblio
%N 3
%P 263-267
%T Calculating the Borehole Geometry Produced by Helical Drilling with Ultrashort Laser Pulses
%V 13
%X Laser drilling is a processing technology applicable for creating holes in various materials. By combining an ultrashort pulsed laser with a helical drilling optics, it is possible to produce high-quality holes with sharp, burr-free edges in a large variety of borehole geometries. To master this highly flexible process which is determined by a multitude of variables, a mathematical description of the problem is advantageous. A simulation model is presented for calculating the final borehole geometry for a given set of laser, process, and material parameters. The model was validated by comparison to boreholes drilled into four different materials: stainless steel, copper, silicon, and aluminum oxide ceramic. By inserting literature values for the refractive index and the ablation threshold fluence, a good agreement between model and experiment can be achieved for holes of different shape and size.
@article{noauthororeditor,
abstract = {Laser drilling is a processing technology applicable for creating holes in various materials. By combining an ultrashort pulsed laser with a helical drilling optics, it is possible to produce high-quality holes with sharp, burr-free edges in a large variety of borehole geometries. To master this highly flexible process which is determined by a multitude of variables, a mathematical description of the problem is advantageous. A simulation model is presented for calculating the final borehole geometry for a given set of laser, process, and material parameters. The model was validated by comparison to boreholes drilled into four different materials: stainless steel, copper, silicon, and aluminum oxide ceramic. By inserting literature values for the refractive index and the ablation threshold fluence, a good agreement between model and experiment can be achieved for holes of different shape and size.},
added-at = {2019-04-16T12:00:33.000+0200},
author = {Kroschel, Alexander and Michalowski, Andreas and Bauer, Franziska and Graf, Thomas},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/28991f1a412d6018548e81c5408375a12/thomas_graf},
interhash = {d0b9497f0ee69055cef29eea6dc0c259},
intrahash = {8991f1a412d6018548e81c5408375a12},
journal = {JLMN-Journal of Laser Micro/Nanoengineering},
keywords = {drilling laser myown peersend:unibiblio},
number = 3,
pages = {263-267},
timestamp = {2019-04-16T10:00:33.000+0200},
title = {Calculating the Borehole Geometry Produced by Helical Drilling with Ultrashort Laser Pulses},
volume = 13,
year = 2018
}
