外文题目: Towards crack-free ablation cutting of thin glass sheets with picosecond pulsed lasers
作者: Sun, Mingying; Eppelt, Urs; Hartmann, Claudia; Schulz, Wolfgang; Zhu, Jianqiang; Lin, Zunqi
刊名: Proc.SPIE
来源图书: PACIFIC RIM LASER DAMAGE 2017-OPTICAL MATERIALS FOR HIGH-POWER LASERS
年: 2017 卷: 10339
会议名称: Pacific Rim Laser Damage Symposium on Optical Materials for High Power Lasers (PLD)
英文关键词:
Laser damage; Glass and other amorphous materials; Ultrafast lasers; Laser materials processing; Picosecond phenomena
FEMTOSECOND LASER; IRRADIATION; DIELECTRICS; MORPHOLOGY; MECHANISM; DAMAGE
英文摘要:
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.


文献类型: 会议论文
正文语种: English
收录类别: ISTP
DOI: 10.1117/12.2272120


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