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Paper | Open Access

Crack-free high-aspect ratio holes in glasses by top–down percussion drilling with infrared femtosecond laser GHz-bursts

Pierre Balage1, John Lopez1, Guillaume Bonamis2, Clemens Hönninger2, Inka Manek-Hönninger1 ( )
Université de Bordeaux-CNRS-CEA, CELIA UMR 5107, 33405 Talence, France
Amplitude, Cité de la Photonique, 11 Avenue de Canteranne, 33600 Pessac, France
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Abstract

We report novel results on top-down percussion drilling in different glasses with femtosecond laser GHz-bursts. Thanks to this particular regime of light–matter interaction, combining non-linear absorption and thermal cumulative effects, we obtained crack-free holes of aspect ratios exceeding 30 in sodalime and 70 in fused silica. The results are discussed in terms of inner wall morphology, aspect ratio and drilling speed.

Keywords

femtosecond laserglassGHz-burstspercussion drilling

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International Journal of Extreme Manufacturing
Volume 5 Issue 1,
March 2023
Pages 015002-015002
DOI: 10.1088/2631-7990/acaa14

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Cite this article:
Balage P, Lopez J, Bonamis G, et al. Crack-free high-aspect ratio holes in glasses by top–down percussion drilling with infrared femtosecond laser GHz-bursts. International Journal of Extreme Manufacturing, 2023, 5(1): 015002. https://doi.org/10.1088/2631-7990/acaa14

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Received: 11 April 2022
Revised: 07 July 2022
Accepted: 07 December 2022
Published: 29 December 2022
© 2022 The Author(s).

Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.