Ultrashort pulse laser welding of glasses without optical contacting
Richter S, Zimmermann F, Sutter D, Budnicki A, Tunnermann A, Nolte S (2017)
Publication Type: Conference contribution
Publication year: 2017
Journal
Publisher: SPIE
Book Volume: 10094
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: San Francisco, CA, USA
ISBN: 9781510606296
DOI: 10.1117/12.2250389
Abstract
We report on ultrashort pulse induced welding of fused silica without previously optical contacting of the samples. We used a TruMicro 2020 by TRUMPF delivering bursts of intense ultrashort laser pulses with an individual pulse energy of up to 10 μJ, an intraburst pulse separation of 20 ns and a burst repetition rate of 200 kHz. With this setup we could realize a large pool of molten material with a length of up to 450 μm and a diameter of around 160 μm. If the laser focus is placed near the surface of a glass sample the low viscosity of the hot material induces bulging of the surface and ejection of the molten material. This molten material can be used to fill a gap of up to 3 μm between fused silica samples. We also determined the breaking strength with a three-point bending test. The determined maximal value of 73 MPa is equivalent to 85% of the stability of the pristine bulk material.
Involved external institutions
Germany (DE)How to cite
APA:
Richter, S., Zimmermann, F., Sutter, D., Budnicki, A., Tunnermann, A., & Nolte, S. (2017). Ultrashort pulse laser welding of glasses without optical contacting. In Peter R. Herman, Alexander Heisterkamp, Michel Meunier, Roberto Osellame (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, USA: SPIE.
MLA:
Richter, Soren, et al. "Ultrashort pulse laser welding of glasses without optical contacting." Proceedings of the Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII 2017, San Francisco, CA, USA Ed. Peter R. Herman, Alexander Heisterkamp, Michel Meunier, Roberto Osellame, SPIE, 2017.
BibTeX: Download