title: Femtosecond-laser generation of self-organized bubble patterns in fused silica.
abstract: By continuously scanning a femtosecond laser beam across a fused silica specimen, we demonstrate the formation of self-organized bubbles buried in the material. Rather than using high intensity pulses and high numerical aperture to induce explosions in the material, here bubbles form as a consequence of cumulative energy deposits. We observe a transition between chaotic and self-organized patterns at high scanning rate (above 10 mm/s). Through modeling the energy exchange, we outline the similarities of this phenomenon with other non-linear dynamical systems. Furthermore, we demonstrate with this method the high-speed writing of two- and three- dimensional bubble "crystals" in bulk silica.
authors: Mechanical Engineering Department, Eindhoven University of Technology, Eindhoven, The Netherlands. y.bellouard@tue.nl
authors: Yves
authors: Y
authors: Bellouard
authors: Max-Olivier
authors: MO
authors: Hongler
mesh_terms: D003198:Computer Simulation; D008422:Materials Testing; D045423:Microbubbles; D008956:Models, Chemical; D012822:Silicon Dioxide / Q000737:chemistry* / Q000528:radiation effects*
chemical_list: D012822:Silicon Dioxide