Predictive ultrafast-laser-enabled microwelding using dynamic pulse propagation modelling

Ryan Scott; Zhenhua Guo; Pankaj Sahoo; Christophe Dorrer; Tao Feng; Jie Qiao

doi:10.1117/12.2585273

5 March 2021 Predictive ultrafast-laser-enabled microwelding using dynamic pulse propagation modelling

Ryan Scott, Zhenhua Guo, Pankaj Sahoo, Christophe Dorrer, Tao Feng, Jie Qiao

Proceedings Volume 11673, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI; 116730M (2021) https://doi.org/10.1117/12.2585273
Event: SPIE LASE, 2021, Online Only

Abstract

We present a dynamic pulse propagation modelling and experiments for femtosecond laser bonding of glass to glass/metal. The modelling provides quantitative estimates of the heat affected zone and weld geometry, incorporating the nonlinear electron dynamics along with temperature-dependent thermal properties. The model numerically determines the desired relative position between the geometrical focus of a femtosecond-laser-pulse and the interface of the two substrates to be welded, for the first time to our knowledge. The welding results of two similar and/or dissimilar materials using the model-predicted weld geometry and offset distance will be presented. This research was supported by NASA SBIR contract 80NSSC20C0432.

Conference Presentation

Citation Download Citation

Ryan Scott, Zhenhua Guo, Pankaj Sahoo, Christophe Dorrer, Tao Feng, and Jie Qiao "Predictive ultrafast-laser-enabled microwelding using dynamic pulse propagation modelling", Proc. SPIE 11673, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI, 116730M (5 March 2021); https://doi.org/10.1117/12.2585273

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