Transport induced pattern selection in a nonlinear optical system
Anno: 1999
Autori: Ramazza PL., Boccaletti S., Ducci S., Arecchi F.T.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy; Univ. de Navarra, Dept. of Phys. and Applied Math. 31080 Pamplona, Spain; University of Florence, Dept. of Physics, 50125 Firenze, Italy
Abstract: The pattern selection process in a two-dimensional optical system, with a Kerr nonlinearity inserted in an optical feedback loop, is strongly affected by nonlocal interactions. Experimentally, nonlocality is introduced by means of a lateral transport of the feedback signal. As the transport length is increased, the system displays a sequence of transition over different classes of patterns. In the case of purely diffractive feedback, patterns corresponding to both focusing and defocusing nonlinearities are reported. When interference instead of diffraction operates in the feedback loop, new selection rules govern both the scale and the spatial symmetry of the observed structures. In all the cases considered, the stability analysis of the model equations yields theoretical predictions in good agreement with the experimental results.
Giornale/Rivista: JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
Volume: 8 (2) Da Pagina: 235 A: 252
Parole chiavi: Feedback Mirror; Liquid-crystal; Convection; Instabilities; Transition; Competition; Symmetries; Chaos; Fluid; StateDOI: 10.1142/S0218863599000163Citazioni: 2dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-10-27Riferimenti 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
