Localized versus delocalized patterns in a nonlinear optical interferometer
Anno: 2000
Autori: Ramazza PL., Ducci S., Boccaletti S., Arecchi F.T.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze; INFM, Sez Firenze; Univ Florence, Dept Phys; Univ Navarra, Dept Appl Math & Phys., Pampalona , Spain
Abstract: We compare the morphology of the spatial structures displayed by an optical system consisting of a liquid crystal light valve (LCLV) in a feedback configuration, as the feedback is gradually tuned from purely diffractive to mixed interferential and diffractive. Different kinds of spatially coherent structures (e.g. hexagons, rolls), as well as localized structures and space-time turbulent patterns are observed. The features of the localized structures change with the parameter setting, and certain regions of the parameter space provide stable clusters of isolated spots (‘molecules’). Numerical simulations based on a Kerr-like model of the LCLV are in agreement with the experimental observations. We analyse the links between the observed behaviours and the results of a linear-stability analysis of the underlying homogeneous stationary states.
Giornale/Rivista: JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
Volume: 2 (3) Da Pagina: 399 A: 405
Parole chiavi: nonlinear optics; pattern formation; liquid crystal light valveDOI: 10.1088/1464-4266/2/3/329Citazioni: 54dati 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