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High-quality tailored-edge cleaving using aberration-corrected Bessel-like beams

Michael Jenne, Daniel Flamm, Taoufiq Ouaj, Julian Hellstern, Jonas Kleiner, Daniel Grossmann, Maximilian Koschig, Myriam Kaiser, Malte Kumkar, and Stefan Nolte

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Abstract

We report on the usage of ultrashort laser pulses in the form of aberration-corrected Bessel-like beams for laser cutting of glass with bevels. Our approach foresees inclining the material’s entrance surface with respect to the processing optics. The detailed analysis of phase distortions caused by the beam transition through the tilted glass surface allows precompensating for occurring aberrations using digital holography. We verify theoretical considerations by means of pump-probe microscopy and present high-quality edges in nonstrengthened silicate glass.

© 2018 Optical Society of America

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Supplementary Material (3)

NameDescription
Visualization 1       Simulated intensity distribution for different tilting angles.
Visualization 2       Comparison of three caustic flights. First, the case of the non-aberrated Bessel-like focus is shown. The second displays the aberrated one for 30°. Finally, the aberration corrected caustic is shown.
Visualization 3       In-situ pump-probe images of aberrated Bessel-like beams.

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