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http://dx.doi.org/10.7735/ksmte.2012.21.3.382

Multi-layer Glass Cutting by Femtosecond Laser  

Shin, Hyun-Myung (계명대학교 기계자동차공학과)
Lee, Young-Min (한국폴리텍 VI 대학 금형설계학과)
Choi, Hae-Woon (계명대학교 기계자동차공학과)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.21, no.3, 2012 , pp. 382-386 More about this Journal
Abstract
A femtosecond laser with 775nm central wavelength and 150 fs of temporal pulse width was used for multi layered glass cutting applications. Ultrashort pulse was effectively used for clean glass cutting with $50{\mu}m$ depth and minimum cutting width. Laser beam was split to two stages and focused on the top surfaces of each layer. Ablation threshold of used glass was measured to be $2.59J/cm^2$. In experiments, 200mW laser power and 1mm/s scanning speed was used for preliminary experiment. Air gap was the major defect occurring parameter and laser power was less sensitive to glass cutting in the experiment. The maximum cutting speed was measured to be 60mm/min with 2kHz, however, Maximum 3m/min cutting speed can be achievable with a commercially available laser with 100kHz.
Keywords
Femtosecond laser; Glass cutting; Display;
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1 Ben-Yakar, A., and Byer, R., 2004, "Femtosecond Laser Ablation Properties of Borosilicate Glass," J. Appl. Phys., Vol. 96, No. 9, pp. 5316-5323.   DOI   ScienceOn
2 Farson, D., Choi, H., Zimmerman, B., Steach, J., Chalmers, J., Olesik, S., and Lee, L., 2008, "Femtosecond Laser Micromachining of Dielectric Materials for Biomedical Applications," J. Micromech. Microeng, Vol. 18, pp. 035020-035028.   DOI   ScienceOn
3 Kang, H. S, Hong, S. K., Oh, S. C., Choi, J. Y., and Song, M. G., 2002, "A Study of Cutting Glass by Laser," Proc. SPIE, pp. 367-370.
4 Jiao, J., and Wang, X., 2009, "Cutting Glass Substrates with Dual-Laser Beams," Opt. Lasers Eng., Vol. 47, No. 7, pp. 860-864.   DOI   ScienceOn
5 Choi, S. D., Cheong, S. H., Kwon, H. G., Jun, J. M., Choi, M. S., and Yang, S. C., 2007 "Design of Hybrid Cutting System for Flat Glass by Laser Beam," Proc. KSMTE, pp. 838-843.
6 Ben-Yakar, A., Harkin, A., Ashmore, J., Byer, R., and Stone, H., 2007, "Thermal and Fluid Processes of a Thin Melt Zone during Femtosecond Laser Ablation of Glass: the Formation of Rims by Single Laser Pulses," J. Appl. Phys., Vol. 40, No. 5, pp. 1447-1459.