Optical pattern selection by a lateral wave-front shift

Year: 1996

Authors: Ramazza PL., Boccaletti S., Giaquinta A., Pampaloni E., Soria S., Arecchi F.T.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Department of Physics, University of Firenze, 50125 Firenze, Italy;
Dip. di Ingegneria Informatica e dell’Automazione, Università di Firenze, Firenze, Italy;
Department E.C.M., Universitat de Barcellona, Spain

Abstract: We report experimental evidence of a series of transitions over different classes of two-dimensional patterns (hexagons, horizontal rolls, vertical rolls, zigzags) observed in a nonlinear optical system in which nonlocal interactions have been introduced by a lateral wave-front shift. At variance with similar scenarios of transitions observed in fluid dynamics, here the pattern selection is operated by the nonlocality mechanism, and a simple theoretical analysis yields predictions in good agreement with the experiment.

Journal/Review: PHYSICAL REVIEW A

Volume: 54 (4)      Pages from: 3472  to: 3475

KeyWords: NONLINEAR OPTICS; NEMATIC LIQUID-CRYSTALS; RAYLEIGH-BENARD CONVECTION; FEEDBACK MIRROR; INSTABILITIES
DOI: 10.1103/PhysRevA.54.3472

Citations: 31
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