Paper 14093-19
Paper 14093-19
High-pressure wave generation in fused silica using multi-spot exposure
13 April 2026 • 17:15 - 17:30 CEST | Curie A (Niveau/Level 1)
Abstract
Phase-only beam shaping with a spatial light modulator (an LCoS SLM) enables the efficient generation of multiple laser spots in three dimensions. Beyond enabling parallel processing for bulk femtosecond laser micromachining of transparent materials, simultaneous machining also leads to overlapping pressure waves originating from the multiple spots. Here, we present experimental results of permanent structural changes in fused silica due to the interaction of these pressure waves and we discuss on their impact for parallelized multi-spot manufacturing.
Presenter
Lisa Ackermann
EPFL (Switzerland)
Lisa Ackermann is a postdoctoral researcher at the Galatea lab at EPFL, Switzerland. She joined the lab in January 2024 and focuses on ultrafast laser material interaction. From 2018-2023 she did her PhD at the Institute of Photonic Technologies at the University of Erlangen-Nürnberg, Germany, where she focused on phase-only beam shaping for laser materials processing using ultrafast lasers. During studying physics at the University of Erlangen-Nürnberg, Germany, she did her Master’s thesis at the Max Planck Institute for the Science of Light in Erlangen, Germany, and had a research stay at the Max Planck – University of Ottawa Centre for Extreme and Quantum Photonics in Ottawa, Canada.