Work

Pulse energy scaling of femtosecond laser-generated stress waves inside fused silica

Year: 2025

Type: article

Abstract: Femtosecond laser-generated stress waves play a crucial role in processing transparent materials. However, their dependence on laser pulse energy, a key processing parameter, remains unclear. To investigate this, we employ a pump-probe microscope-polariscope with in situ laser intensity imaging, complemented by multiphysics-multiscale numerical simulations. Our study examines single-shot irradiation inside fused silica using 360-fs, 1030-nm laser pulses with energies ranging from 250 nJ to several μJ. We observe a logarithmic scaling of the principal stress difference, governed by peak intensity clamping, in quantitative agreement with simulations.

Source: Optics Letters

DOI: 10.1364/ol.568702

Authors: Olga Koritsoglou, Guillaume Duchateau, Olivier Utéza, Alexandros Mouskeftaras

Institution: Aix-Marseille Université

Language: English

Topic: Laser Material Processing Techniques

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Agence Nationale de la Recherche

Award: lasEr solutions for Spatial and temPoRal shockwavE Shaping inside SOlids: towards 3D writing of silica polymorphs