Abstract
The position and posture of the optical components in the optomechanical systems require to be adjusted before connection, so a certain gap between optics and metal base is needed to ensure the adjustment space, which challenges the connection of glass and metal with a relatively large gap. In this paper, a welding method combining laser soldering and ultrafast laser welding is put forward to connect glass and metal with a gap of hundreds of microns. The texturing pattern on the metal surface is designed to control the solder distribution, and the welding strength is improved by 3.5 times compared to that without patterns. The present method provides a generally applicable connection of glass and metal with a large gap.
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