Characteristics of laser absorption and welding in FOTURAN glass by ultrashort laser pulses
Characteristics of laser absorption and welding in FOTURAN glass by ultrashort laser pulses
复制标题
DOI：
10.1364/oe.19.022961
复制
发表时间：
2011-11-07
期刊：
影响因子：
3.8
通讯作者：
Helvajian, Henry
中科院分区：
文献类型：
--
作者：
Miyamoto, Isamu;Cvecek, Kristian;Helvajian, Henry
通过实验测量和热传导模型，评价了FOTURAN玻璃在不同激光脉冲能量、重复频率、平移速度和样品热性质等参数下对超短激光脉冲的非线性吸收能力。采用三点弯曲试验和剪切试验分别确定了激光熔埋试样和叠焊试样的机械强度。结果与激光平均吸收功率W-ab有关。我们发现，如果样品对预先粘合以提供光学接触，则重叠焊接接头的机械强度与低W-ab的基材的机械强度一样高。(C) 2011美国光学学会
The 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 W-ab. We found the mechanical strength of an overlapped weld joint to be as high as that of the base material for low W-ab, if the sample pair is pre-bonded to provide optical contact. (C) 2011 Optical Society of America