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Efficient microwelding of glass substrates by ultrafast laser irradiation using a double-pulse train
Koji Sugioka1, Makoto Iida, Hiroshi Takai
1Laser Technology Laboratory, RIKEN - Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan. ksugioka@riken.jp
Abstract:
Efficient microwelding of glass substrates by irradiation by a double-pulse train of ultrafast laser pulses is demonstrated. Temporal beam shaping techniques such as double-pulse irradiation enabled increased flexibility for high-quality, high-efficiency material processing. The bonding strength of two photostructurable glass substrates welded by double-pulse irradiation was evaluated to be 22.9 MPa, which is approximately 22% greater than that of a sample prepared by conventional irradiation by a single-pulse train.
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