Two-dimensional crystals and quasicrystals in nonlinear optics

Year: 1995

Authors: Pampaloni E., Ramazza P.L., Residori 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

Abstract: We report the observation of two-dimensional periodic and quasiperiodic structures in the transverse profile of an optical beam circulating in a loop which contains a nonlinear medium. The symmetries of the patterns are imposed by an image rotation within the loop. We propose a simple model which shows the existence of two unstable bands of transverse wave vectors. Close to threshold, the predictions of the model are qualitatively and quantitatively confirmed by the experiment.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 74(2)      Pages from: 258  to: 261

KeyWords: SINGLE FEEDBACK MIRROR; PATTERN-FORMATION; LIQUID-CRYSTAL; SYMMETRY;
DOI: 10.1103/PhysRevLett.74.258

Citations: 77
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