Millijoule femtosecond micro-Bessel beams for ultra-high aspect ratio machining - Laboratoire des Solides Irradiés (LSI) Accéder directement au contenu
Article Dans Une Revue Applied optics Année : 2015

Millijoule femtosecond micro-Bessel beams for ultra-high aspect ratio machining

Résumé

We report on a functional experimental design for Bessel beam generation capable of handling high-energy ultra-short pulses (up to 1.2 mJ per pulse of 50 fs duration). This allows us to deliver intensities exceeding the breakdown threshold for air or any dielectric along controlled micro-filaments with lengths exceeding 4 mm. It represents an unprecedented upscaling in comparison to recent femtosecond Bessel beam micromachining experiments. We produce void microchannels through glass substrates to demonstrate that aspect ratios exceeding 1200: 1 can be achieved by using single high-intensity pulses. This demonstration must lead to new methodologies for deep-drilling and high-speed cutting applications. (C) 2015 Optical Society of America
Fichier non déposé

Dates et versions

hal-01418530 , version 1 (16-12-2016)

Identifiants

Citer

Sambit Mitra, Margaux Chanal, Raphael Clady, Alexandros Mouskeftaras, David Grojo. Millijoule femtosecond micro-Bessel beams for ultra-high aspect ratio machining. Applied optics, 2015, 54 (24), pp.7358-7365. ⟨10.1364/AO.54.007358⟩. ⟨hal-01418530⟩
279 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More