At high repetition rate, nonlinear absorption of tightly-focused femtosecond pulses produces a point-like heat source that can be located inside a transparent material, allowing glass welding with weld lines that are located on internal surfaces.
© 2006 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3390) Lasers and laser optics : Laser materials processing
(320.0320) Ultrafast optics : Ultrafast optics
(320.2250) Ultrafast optics : Femtosecond phenomena
J. Bovatsek, A. Arai, and C. B. Schaffer, "Three-Dimensional Micromachining Inside Transparent Materials Using Femtosecond Laser Pulses: New Applications," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper CThEE6.
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