Studies of laser cutting on glass by picosecond laser

Yetao Liu; Lunzhen Hu; Qingchuan Guo; Yuqiang Hou; Liang Lü; Evgeny L. Gurevich; Andreas Ostendorf

doi:10.1117/12.2685881

27 November 2023 Studies of laser cutting on glass by picosecond laser

Yetao Liu, Lunzhen Hu, Qingchuan Guo, Yuqiang Hou, Liang Lü, Evgeny L. Gurevich, Andreas Ostendorf

Proceedings Volume 12762, Advanced Laser Processing and Manufacturing VII; 1276205 (2023) https://doi.org/10.1117/12.2685881
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

At present, laser cutting has emerged as a new technology in the field of glass cutting to achieve a good quality and high efficiency, that is believed to have a very broad application prospect. In this report, the glass cutting by picosecond laser with a high peak power and a long focal-depth Bessel beam was studied. The maximum power of laser is chosen to be 50 W with a spot size of 2 mm, pulse width of 10 ps, and wavelength of 1064 nm. The frequency is adjustable in the range of 50 KHz to 200 KHz. The factors affecting the cutting roughness was analyzed, including the focus position, speed, and power. Meanwhile, the glass is split by a carbon dioxide laser with the wavelength of 10.6 μm and maximum power is 100 W, which breaks due to internal stress induced by heating. By adjusting the speed, power and focusing position, the good processing parameters for the ultra-white glass with thickness of 4 mm were found. High quality cutting with minimum edge breakage less than 3 μm is confirmed by microscope. Moreover, nonstandard-shaped cutting and straight line cutting with a high speed of 300 mm/s have also achieved in this work. All results demonstrates that ultra-fast laser is a promising tool for glass cutting.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yetao Liu, Lunzhen Hu, Qingchuan Guo, Yuqiang Hou, Liang Lü, Evgeny L. Gurevich, and Andreas Ostendorf "Studies of laser cutting on glass by picosecond laser", Proc. SPIE 12762, Advanced Laser Processing and Manufacturing VII, 1276205 (27 November 2023); https://doi.org/10.1117/12.2685881

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KEYWORDS

Laser cutting

Glasses

Picosecond phenomena

Beam diameter

Bessel beams

Microscopes

Laser ablation

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