Vortices and defect statistics in two-dimensional optical chaos
Anno: 1991
Autori: Arecchi F.T., Giacomelli G., Ramazza P.L., Residori S.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Department of Physics, University of Firenze, 50125 Firenze, Italy
Abstract: We present the first direct experimental evidence of topological defects in nonlinear optics. For increasing Fresnel numbers F, the two-dimensional field is characterized by an increasing number of topological defects, from a single vortex, up to a large number of vortices with zero net topological charge. At variance with linear scattering from a fixed phase plate, here the defect pattern evolves in time according to the nonlinear dynamics. We assign the scaling exponents for the mean number of defects, their mean separation, and the charge unbalance as functions of F, as well as the correlation time of the defect pattern.
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 67 (27) Da Pagina: 3749 A: 3752
Parole chiavi: TURBULENCE; DYNAMICS; DOI: 10.1103/PhysRevLett.67.3749Citazioni: 238dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui