Paper 14093-18
Paper 14093-18
Large-scale, high-strength transparent welding of thick fused silica using femtosecond laser pulses
13 April 2026 • 17:00 - 17:15 CEST | Curie A (Niveau/Level 1)
Abstract
We report on large-scale (2”), crack-free, and high mechanical strength transparent welding (> 360 MPa) of thick fused silica substrates (10 mm) using an ultrafast laser emitting 500-fs pulses at a wavelength of 1030 nm. The influence of scanning strategy is discussed in terms of joint quality and morphology. Shear stress and fatigue resistance measurements were carried out using a direct and glue-free method.
Presenter
John Lopez
Univ. de Bordeaux (France), Ctr. Lasers Intenses et Applications, CNRS (France)
John Lopez was awarded from the French graduate school of Physics and Chemistry of Bordeaux in 1993. He got his PhD on laser ablation of polymers at the University of Bordeaux in 1997. He has a permanent position as a research engineer in the French CNRS since 2001 and he is currently working in a public institute in the University of Bordeaux (CELIA). He is known worldwide as an expert in laser-matter interaction and laser micro-machining. He is the author of 52 peer-reviewed scientific papers, 7 patents and more than 50 proceedings. He co-supervised 7 PhD theses (3 ongoing) on laser-matter interaction. He headed the department dedicated to laser material processing at ALPHANOV from 2007 to 2012. He is the President of the French association of industrial laser users (CLP) since 2010 and a member in the steering committee of Photonics France since 2018. He is the director of the TRICORN tripartite joint research laboratory created in 2023, between CELIA, ALPHANOV, and AMPLITUDE.