Pattern formation and competition in nonlinear optics
Anno: 1996
Autori: Residori S., Ramazza PL., Pampaloni E., Arecchi F.T.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: Recently we have observed two-dimensional periodic and quasiperiodic structures in the transverse profile of an optical beam circulating in a feedback loop which contains a The symmetries observed depend not only on the interaction between light and nonlinear medium, but also on a nonlocality due to beam rotation in tile feedback loop. The linear stability analysis of our model shows the existence of many unstable bands of transverse wavevectors. Close to threshold, predictions are qualitatively and quantitatively confirmed by the experiment. When the intensity threshold values are almost the same for the two principal bands, structures with different wavenumbers arise above threshold. These modes compete with a very complex dynamics. We have started to study this behavior by means of suitable indicators. As a first indicator ire have individuated the fraction of light power distributed on tile first band respect to that one distributed oil both.
Giornale/Rivista: JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
Volume: 5 (2) Da Pagina: 367 A: 386
Parole chiavi: SINGLE FEEDBACK MIRROR; LIQUID-CRYSTAL; SYMMETRY; TRANSITION; WAVESDOI: 10.1142/S0218863596000234Citazioni: 6dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti 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