Improved laser glass cutting by spatio-temporal control of energy deposition using bursts of femtosecond pulses

Autor: Rainer Kling, Eric Mottay, O. Dematteo Caulier, Clemens Hönninger, B. Chimier, R. Beuton, Stefan Skupin, Guillaume Duchateau, John Lopez, Konstantin Mishchik, Bruno Chassagne
Přispěvatelé: Amplitude Systèmes, Centre d'Etudes Lasers Intenses et Applications (CELIA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), ALPhANOV, alphanov, Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Optics Express
Optics Express, Optical Society of America-OSA Publishing, 2017, 25 (26), ⟨10.1364/OE.25.033271⟩
Optics Express, 2017, 25 (26), ⟨10.1364/OE.25.033271⟩
ISSN: 1094-4087
DOI: 10.1364/OE.25.033271⟩
Popis: International audience; We demonstrate the advantage of combining non-diffractive beam shapes and femtosecond bursts for volume laser processing of transparent materials. By redistribution of the single laser pulse energy into several sub-pulses with 25 ns time delay, the energy deposition in the material can be enhanced significantly. Our combined experimental and theoretical analysis shows that in burst-mode detrimental defocusing by the laser generated plasma is reduced, and the non-diffractive beam shape prevails. At the same time, heat accumulation during the interaction with the burst leads to temperatures high enough to induce material melting and even in-volume cracks. In an exemplary case study, we demonstrate that the formation of these cracks can be controlled to allow high-speed and high-quality glass cutting.
Databáze: OpenAIRE