1 August 2017 Towards crack-free ablation cutting of thin glass sheets with picosecond pulsed lasers
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Proceedings Volume 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers; 103390O (2017) https://doi.org/10.1117/12.2272120
Event: Pacific Rim Laser Damage 2017: Optical Materials for High Power Lasers, 2017, Shanghai, China
Abstract
We investigated the morphology and mechanism of laser-induced damage in the ablation cutting of thin glass sheets with picosecond laser. Two kinds of damage morphologies observed on the cross-section of the cut channel, are caused by high-density free-electrons and the temperature accumulation, respectively. Notches and micro-cracks can be observed on the top surface of the sample near the cut edge. The surface micro-cracks were related to high energy free-electrons and also the heat-affected zone. Heat-affected-zone and visible-cracks free conditions of glass cutting were achieved by controlling the repetition rate and spatial overlap of laser pulses.
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Mingying Sun, Mingying Sun, Urs Eppelt, Urs Eppelt, Claudia Hartmann, Claudia Hartmann, Wolfgang Schulz, Wolfgang Schulz, Jianqiang Zhu, Jianqiang Zhu, Zunqi Lin, Zunqi Lin, } "Towards crack-free ablation cutting of thin glass sheets with picosecond pulsed lasers", Proc. SPIE 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers, 103390O (1 August 2017); doi: 10.1117/12.2272120; https://doi.org/10.1117/12.2272120
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