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Proceedings Paper

Ultrastable bonding of glass with femtosecond laser bursts
Author(s): Sören Richter; Felix Zimmermann; Sven Döring; Andreas Tünnermann; Stefan Nolte
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Paper Abstract

We report on the welding of fused silica with bursts of ultrashort laser pulses. The bursts consist of ultrashort laser pulses with a repetition rate of 9.4 MHz. However, the time between the laser bursts is about 10 μs, which reduces the maximal temperature rise. Micrographs and simulations show that the molten structures are enlarged while using laser bursts. In addition, the usage of bursts instead of continuous pulse trains reduces the laser induced stress. By optimizing the burst frequency and repetition rate we were able to achieve a breaking resistance of up to 96% of the bulk material, which is significantly higher than in conventional high repetition rate laser bonding.

Paper Details

Date Published: 15 March 2013
PDF: 8 pages
Proc. SPIE 8611, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII, 86111C (15 March 2013); doi: 10.1117/12.2006075
Show Author Affiliations
Sören Richter, Friedrich-Schiller-Univ. Jena (Germany)
Felix Zimmermann, Friedrich-Schiller-Univ. Jena (Germany)
Sven Döring, Friedrich-Schiller-Univ. Jena (Germany)
Andreas Tünnermann, Friedrich-Schiller-Univ. Jena (Germany)
Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Stefan Nolte, Friedrich-Schiller-Univ. Jena (Germany)
Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)


Published in SPIE Proceedings Vol. 8611:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII
Alexander Heisterkamp; Peter R. Herman; Michel Meunier; Stefan Nolte, Editor(s)

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