Li Qingfeng, Matthäus Gabor, Sohr David, Nolte Stefan
Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany.
Thorlabs GmbH, Münchner Weg 1, 85232 Bergkirchen, Germany.
Nanomaterials (Basel). 2025 Aug 6;15(15):1202. doi: 10.3390/nano15151202.
We report on the welding of optical borosilicate glass to an unpolished copper substrate (surface Ra of 0.27 µm and Rz of 1.89 µm) using bursts of femtosecond laser pulses. The present paper puts forth the hypothesis that glass-metal welding with a gap is contingent upon the ejection of molten jets of glass. We have ascertained the impact of pulse energy and focal position on weldability. This finding serves to substantiate our initial hypothesis and provides a framework for understanding the conditions under which this hypothesis is applicable. Under optimal conditions, but without the assistance of any clamping system, our welded samples maintained a breaking resistance of up to 10.9 MPa.
我们报道了使用飞秒激光脉冲串将光学硼硅酸盐玻璃焊接到未抛光的铜基板（表面粗糙度 Ra 为 0.27 µm，Rz 为 1.89 µm）上的情况。本文提出了一个假设，即有间隙的玻璃 - 金属焊接取决于玻璃熔融射流的喷射。我们已经确定了脉冲能量和焦点位置对可焊性的影响。这一发现有助于证实我们最初的假设，并为理解该假设适用的条件提供了一个框架。在最佳条件下，但没有任何夹紧系统的辅助，我们焊接的样品保持了高达 10.9 MPa 的抗断裂强度。
