Transition from boundary – to bulk-controlled regimes in optical pattern formation
Anno: 1993
Autori: Arecchi F.T., Boccaletti S., 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: By increasing the Fresnel number F of the cavity of a photorefractive oscillator, we report the transition from a boundary-controlled regime, where the size of the transverse patterns scales as 1/square-root F, to a bulk-controlled regime where the pattern size is independent of F. In this new regime, the size corresponds to an intrinsic correlation length imposed by diffusion processes within the material. The wave number spectrum of the emitted field has a sharp cutoff, corresponding to the length scale of bulk correlations. Such a new behavior is explained by the wave number dependence of the gain within the instability region.
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 70 (15) Da Pagina: 2277 A: 2280
Parole chiavi: Fresnel number; pattern formation; TransitionDOI: 10.1103/PhysRevLett.70.2277Citazioni: 79dati 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