Product Code: ICA12_M401

Welding Characteristics of Foturan Glass Using Ultrashort Laser Pulses - Invited Presentation - 40 Minutes
Isamu Miyamoto, Osaka Univ., Erlangen Graduate School of Advanced Optical Technologies (SAOT); Hyogo Japan
Kristian Cvecek, blz - Bayerisches Laserzentrum; Erlangen Germany
Yasuhiro Okamoto, Okayama Univ.; Okayama Jordan
Michael Schmidt, Erlangen Graduate School of Advanced Optical Technologies (SAOT), blz - Bayerisches Laserzentrum, Erlangen-Nuremberg Univ.; Erlangen Germany
Henry Helvajian, The Aerospace Corporation; Los Angeles CA USA
Presented at ICALEO 2012

Nonlinear absorptivity of Foturan glass to ultrashort
laser pulses is evaluated by experimental measurement
and thermal conduction model at different parameters
including energy and repetition rate of the laser pulse,
translation speed and thermal properties of the sample.
The mechanical strength of an embedded laser-melted
sample and an overlapped weld sample is determined
by a three-point-bending test and a shear test,
respectively. The results are related to the average
absorbed laser power Wab. We found the mechanical
strength of an overlapped weld joint to be as high as
that of the base material for low Wab, if the sample pair
is pre-bonded to provide optical contact.

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