Advances in Laser Micro-welding of Transparent Hard Brittle (THB) Materials

Junbao Li; Shufeng Sun; Fengyun Zhang; Liang Li; Yong Zhu; Gongliang Chen; Bingkun Xia; Xuri Li

doi:10.6911/WSRJ.202503_11(3).0008

Authors

Junbao Li
Shufeng Sun
Fengyun Zhang
Liang Li
Yong Zhu
Gongliang Chen
Bingkun Xia
Xuri Li

DOI:

https://doi.org/10.6911/WSRJ.202503_11(3).0008

Keywords:

Micro-welding; THB; UF laser; Linear absorption; Conventional laser; Nonlinear absorption.

Abstract

Transparent hard brittle (THB) materials have attracted much attention due to their properties such as broad spectral transmittance, excellent chemical inertness, and high hardness, but they often face micro-joining challenges in practical applications. Laser processing is a contactless and high-precision processing method, which has become an important technology in the field of micro-welding due to its wide range of applications, easy operation and high efficiency. In this paper, the effects of different lasers in THB due to different energy deposition are analyzed by taking the characteristic time of electron-phonon coupling of 10 ps as the boundary. The article focuses on summarizing the current research status and welding methods of conventional laser welding and ultra fast (UF) laser welding at home and abroad, and puts forward feasible suggestions for future research, which will provide a reference for the in-depth study of laser micro-welding of THB materials.

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