Advances of Laser Welding Technology of Glass -Science and Technology-

Miyamoto I, Cvecek K, Schmidt M (2020)

Publication Language: English

Publication Type: Journal article, Letter

Publication year: 2020

Journal

Journal of Laser Micro Nanoengineering Japan Laser Processing Society (JLPS)

Book Volume: 15

Pages Range: 63-76

Journal Issue: 2

DOI: 10.2961/jlmn.2020.02.1001

Open Access Link: http://www.jlps.gr.jp/jlmn/archive/15/15_02/

Abstract

Advances of laser welding technology of glass by continuous wave (CW), ns pulse, and ultrashort pulse (USP) lasers are overviewed in the past two decades from scientific and technological points of view. A novel thermal stress model shows that crack prevention in laser welding of glass depends on whether or not the molten pool has a free-surface. In glass/glass welding by CW laser, crack-free-welding is limited to glass having small coefficient of thermal expansion (CTE) due to the shrinkage stress, since the molten pool has a free-surface. In glass/glass welding by USP laser, crack-free-weld-ing is available independently of glass's CTE if the gap between glass substrates is small, since non-linear absorption process produces a molten pool having no free-surface so that the shrinkage stress is suppressed. Technical efforts to increase the bridgable gap without cracks using USP laser are demonstrated. In dissimilar welding of glass/metal (or glass/Si), successful weld joint can be obtained using ns and USP lasers by suppressing the melt splash of metal (or Si).

Authors with CRIS profile

Kristian Cvecek Lehrstuhl für Photonische Technologien Michael Schmidt Lehrstuhl für Photonische Technologien

Additional Organisation(s)

Erlangen Graduate School in Advanced Optical Technologies Lehrstuhl für Photonische Technologien

Involved external institutions

Osaka University JP Japan (JP)

How to cite

APA:

Miyamoto, I., Cvecek, K., & Schmidt, M. (2020). Advances of Laser Welding Technology of Glass -Science and Technology-. Journal of Laser Micro Nanoengineering, 15(2), 63-76. https://dx.doi.org/10.2961/jlmn.2020.02.1001

MLA:

Miyamoto, Isamu, Kristian Cvecek, and Michael Schmidt. "Advances of Laser Welding Technology of Glass -Science and Technology-." Journal of Laser Micro Nanoengineering 15.2 (2020): 63-76.

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