Avoiding the requirement for pre-existing optical contact during picosecond laser glass-to-glass welding.
Avoiding the requirement for pre-existing optical contact during picosecond laser glass-to-glass welding.
复制标题
避免在皮秒激光玻璃与玻璃焊接过程中对预先存在的光学接触的要求。
作者：
Jianyong Chen;R. Carter;R. Thomson;D. Hand
先前关于玻璃对玻璃的超快激光焊接的报道表明，待连接部件之间预先存在的光学接触（或非常接近）是必不可少的。本文研究了皮秒激光焊接弥合微米尺度缝隙的能力，并成功地焊接了两个预先存在3µm缝隙的玻璃而没有开裂。结果表明，焊接速度对可焊接的最大间隙影响不显著，而与激光功率和相对于材料界面的焦点位置密切相关。在不同的功率和表面分离范围内观察到五种不同类型的材料改性，并提出了一种机制来解释这些观察结果。
Previous reports of ultrafast laser welding of glass-to-glass have indicated that a pre-existing optical contact (or very close to) between the parts to be joined is essential. In this paper, the capability of picosecond laser welding to bridge micron-scale gaps is investigated, and successful welding, without cracking, of two glasses with a pre-existing gap of 3 µm is demonstrated. It is shown that the maximum gap that can be welded is not significantly affected by welding speeds, but is strongly dependent on the laser power and focal position relative to the interface between the materials. Five distinct types of material modification were observed over a range of different powers and surface separations, and a mechanism is proposed to explain the observations.
影响因子：
1.9
作者：
Carter, Richard M.;Chen, Jianyong;Hand, Duncan P.
通讯作者：
Hand, Duncan P.