title: Interaction dynamics of spatially separated cavitation bubbles in water.
abstract: We present a high-speed photographic analysis of the interaction of cavitation bubbles generated in two spatially separated regions by femtosecond laser-induced optical breakdown in water. Depending on the relative energies of the femtosecond laser pulses and their spatial separation, different kinds of interactions, such as a flattening and deformation of the bubbles, asymmetric water flows, and jet formation were observed. The results presented have a strong impact on understanding and optimizing the cutting effect of modern femtosecond lasers with high repetition rates (>1 MHz).
authors.affiliation: Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany. n.tinne@lzh.de
authors.forename: Nadine
authors.initials: N
authors.lastname: Tinne
authors.forename: Silvia
authors.initials: S
authors.lastname: Schumacher
authors.forename: Valeria
authors.initials: V
authors.lastname: Nuzzo
authors.forename: Cord L
authors.initials: CL
authors.lastname: Arnold
authors.forename: Holger
authors.initials: H
authors.lastname: Lubatschowski
authors.forename: Tammo
authors.initials: T
authors.lastname: Ripken
mesh_terms: D003198:Computer Simulation; D005740:Gases / Q000737:chemistry* / Q000528:radiation effects*; D007834:Lasers; D008956:Models, Chemical; D014867:Water / Q000737:chemistry*
chemical_list: D005740:Gases; D014867:Water