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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 6 — Feb. 20, 2013
  • pp: 1149–1154

Ultrastable bonding of glass with femtosecond laser bursts

Felix Zimmermann, Sören Richter, Sven Döring, Andreas Tünnermann, and Stefan Nolte  »View Author Affiliations

Applied Optics, Vol. 52, Issue 6, pp. 1149-1154 (2013)

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We report on the welding of fused silica with bursts of ultrashort laser pulses. 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 conventional high repetition rate laser bonding. The main reason for this stability increase is the reduced stress in the surroundings of the laser induced weld seams, which is proven by measurements of the stress-induced birefringence. A detailed analysis of the shape of the molten structures shows elongated structures in the burst regime. This can be attributed to stronger heating, which is supported by our thermodynamic simulations of the laser melting and bonding process.

© 2013 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(320.0320) Ultrafast optics : Ultrafast optics

ToC Category:
Ultrafast Optics

Original Manuscript: October 22, 2012
Revised Manuscript: December 22, 2012
Manuscript Accepted: December 29, 2012
Published: February 11, 2013

Felix Zimmermann, Sören Richter, Sven Döring, Andreas Tünnermann, and Stefan Nolte, "Ultrastable bonding of glass with femtosecond laser bursts," Appl. Opt. 52, 1149-1154 (2013)

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