Pattern dynamics in a large Fresnel number laser close to threshold

Year: 1997

Authors: Labate A., Ciofini M., Meucci R., Boccaletti S., Arecchi F.T.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: A high Fresnel number laser close to threshold can be set at a detuning value where it displays only the first transverse pattern with zero intensity in its center. However, the availability of a large phase space gives rise to a new type of dynamics. Precisely, for this highly symmetric situation, the intensity pattern undergoes a transition between stable and oscillating superpositions of traveling and standing waves. Such a transition corresponds to the so-called Takens-Bogdanov bifurcation. We report experimental evidence of such a behavior.

Journal/Review: PHYSICAL REVIEW A

Volume: 56 (3)      Pages from: 2237  to: 2241

KeyWords: Benard-Marangoni convection; Spatiotemporal dynamics; Co2-laser; Symmetry; Vortices
DOI: 10.1103/PhysRevA.56.2237

Citations: 8
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