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Two-layer vertical welding of glasses by femtosecond laser through galvo scanner

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Abstract

We demonstrated two-layer vertical welding of fused silica by femtosecond laser through galvo scanner. Promising approaches to a well-known technique of glasses welding by femtosecond laser were presented, which provided us efficient ways to draw welding route without programming through galvo scanner, gravitational effects on the welding direction by vertical welding and realized two-layer welding at very short intervals to refine microstructure and increase bonding strength in bonding zone. Under the same parameters condition, we found that the maximum joining strength as large as 80.26 MPa could be obtained in two-layer vertical welding through galvo scanner, which exceeded quadruple of one-layer horizontal welding focused by objective lens. Compared with one-layer welding, more uniform and fine microstructure can be obtained in bonding region by two-layer welding.

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Acknowledgements

This research was supported by Research start-up funds of DGUT (The Mechanism and Intelligent Manufacturing of Glass Welding by Femtosecond Laser) (GC300501-098); Guangdong Provincial Key Platforms and Major Scientific Research Projects in Colleges and Universities featured innovation programs (The Research of Coupling Mechanism of Thermal-mechanical-magnetic and High-performance Manufacturing of Glass Miro-nano Welding by Femtosecond Laser Pulses) (2018KTSCX228); The Development of Society and Technology Project in Dongguan City (The Manufacturing of Micro-pore and Multicolor Eco-friendly Glass Welding by Femtosecond Laser) (2019507140179); China Scholarship Council (202008440014); The Project of Rural Technical Task Force of Guangdong Province in 2020 (KTP20200241); The Open-ended Project of a New-type Integration and Development of Cities and Towns Research Institute in Dongguan City (The Manufacturing of Ecological and Environmental Multilayer Glass and its Applied Research of in Greenhouse) (Grant No., Pending).

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Authors and Affiliations

  1. Dongguan University of Technology, Dongguan, 523106, China

    Hua Tan, Yuxun Zhang, Yanxing Liu & Xiaoquan Fu

  2. State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Hua Tan

  3. College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, 414000, China

    Hua Tan

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  1. Hua Tan
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Correspondence to Hua Tan.

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Tan, H., Zhang, Y., Liu, Y. et al. Two-layer vertical welding of glasses by femtosecond laser through galvo scanner. J Opt 49, 408–415 (2020). https://doi.org/10.1007/s12596-020-00635-1

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