Boundary dominated versus bulk dominated regime in optical space-time complexity

Year: 1994

Authors: Arecchi F.T., Boccaletti S., Giacomelli G., Puccioni GP., Ramazza PL., Residori S.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy; Department of Physics, University of Firenze, 50125 Firenze, Italy

Abstract: By increasing the aspect ratio of an optical cavity with a photorefractive crystal, we observe the transition from a boundary-controlled regime, where the size of the transverse patterns scales with the aspect ratio, to a bulk-controlled regime where the pattern size is independent of the aspect ratio. In this new regime, the size corresponds to an intrinsic correlation length imposed by diffusion processes within the material. Such a new behavior is explained by the wave-number dependence of the gain within the instability region. Model equations provide good agreement with the two asymptotic cases of small aspect ratio (diffraction limited regime) and large aspect ratio (diffusion limited regime).

Journal/Review: INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS

Volume: 4 (5)      Pages from: 1281  to: 1295

KeyWords: IMPERFECT O(2) SYMMETRY; PATTERN-FORMATION; DYNAMICS; CHAOS; TRANSITION
DOI: 10.1142/S0218127494000976

Citations: 1
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