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Reinforced direct bonding of optical materials by femtosecond laser welding |
Applied Optics, Vol. 51, Issue 12, pp. 2098-2106 (2012)
http://dx.doi.org/10.1364/AO.51.002098
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Abstract
A process for reinforcing a direct bond between optical materials using femtosecond laser welding is presented. As a side benefit, the optical transmission properties of the joined components are shown not to be altered by the joining process. The joints exhibits higher shear breakage loads, yielding a maximum measured joint strength of 5.25 MPa for an applied load of 75 kg in fused silica. The laser sealing of direct bonds between dissimilar materials improves their resistance to thermal shocks. Direct bonds sealed by a circular weld seam can withstand thermal shocks at temperatures at least twice as great as nonreinforced direct bonds. The combination of ultrashort laser welding and direct bonding provides an innovative joining method that benefits from the advantages of both contributing physical processes.
© 2012 Optical Society of America
OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(140.7090) Lasers and laser optics : Ultrafast lasers
(160.2750) Materials : Glass and other amorphous materials
(220.4610) Optical design and fabrication : Optical fabrication
(320.2250) Ultrafast optics : Femtosecond phenomena
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: November 2, 2011
Revised Manuscript: February 27, 2012
Manuscript Accepted: February 27, 2012
Published: April 18, 2012
Citation
David Hélie, Michael Bégin, Fabrice Lacroix, and Réal Vallée, "Reinforced direct bonding of optical materials by femtosecond laser welding," Appl. Opt. 51, 2098-2106 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-12-2098
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