Evaluation of molten zone in micro-welding of glass by picosecond pulsed laser

Okamoto Y, Miyamoto I, Cvecek K, Okada A, Takahashi K, Schmidt M (2013)

Publication Type: Journal article

Publication year: 2013

Journal

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

Book Volume: 8

Pages Range: 65-69

Journal Issue: 1

DOI: 10.2961/jlmn.2013.01.0013

Abstract

Glass materials have been widely used in optics, MEMS, electronics and biomedical applica-tions because of their excellent optical, mechanical and chemical properties. Fusion welding by ul-trashort pulsed laser has been proposed as a promising technique for glass joining, since joining can be accomplished without an intermediate layer and mechanical contact. However, to apply a fusion welding technique by ultrashort pulsed laser as a reliable joining method, it is important to under-stand the mechanical properties of the weld seam since glass materials are very sensitive to tempera-ture gradients. Therefore, a method of evaluating the weld seam in the fusion welding of glass by picosecond pulsed laser was discussed, and its mechanical strength was investigated. A larger opti-cal contact area had a great influence on the shear load of the weld seam, while a smaller optical contact area could reduce the influence of the contact area on the measurement of shear load. There-fore, it was important to reduce the optical contact area to accurately evaluate the shearing strength of weld seam. The mechanical strength of the weld seam reduced at a low pulse repetition rate. High bending strength and shear stress could be obtained at a proper pulse repetition rate.

Authors with CRIS profile

Michael Schmidt Lehrstuhl für Photonische Technologien

Additional Organisation(s)

Lehrstuhl für Photonische Technologien Erlangen Graduate School in Advanced Optical Technologies

Involved external institutions

Okayama University / 岡山大学 JP Japan (JP) Osaka University JP Japan (JP) Bayerisches Laserzentrum gemeinnützige Forschungsgesellschaft mbH (BLZ) DE Germany (DE)

How to cite

APA:

Okamoto, Y., Miyamoto, I., Cvecek, K., Okada, A., Takahashi, K., & Schmidt, M. (2013). Evaluation of molten zone in micro-welding of glass by picosecond pulsed laser. Journal of Laser Micro Nanoengineering, 8(1), 65-69. https://dx.doi.org/10.2961/jlmn.2013.01.0013

MLA:

Okamoto, Yasuhiro, et al. "Evaluation of molten zone in micro-welding of glass by picosecond pulsed laser." Journal of Laser Micro Nanoengineering 8.1 (2013): 65-69.

BibTeX: Download