Self-organized superlattice patterns with two slightly differing wave numbers

Grosse Westhoff, E. and Herrero, R. and Ackemann, T. and Lange, W. (2003) Self-organized superlattice patterns with two slightly differing wave numbers. Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 67 (2). 025203-1. ISSN 2470-0053 (http://dx.doi.org/10.1103/PhysRevE.67.025203)

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Abstract

We report on the observation of superlattices that occur spontaneously in a nonlinear optical system with O(2) symmetry. A secondary bifurcation from hexagons yields patterns formed by twelve wave vectors. Besides irregular patterns these may either be quasiperiodic patterns or superlattices built from two classes of wave vectors differing slightly in their length. Both classes of wave vectors stem from only one pattern-forming instability. The wave vectors fit on a hexagonal or a square grid. In the former case the set of wave vectors can be decomposed into two hexagonal triads, whereas in the case of the square grid squeezed triads occur.

ORCID iDs

Grosse Westhoff, E., Herrero, R., Ackemann, T. ORCID logoORCID: https://orcid.org/0000-0003-2727-7395 and Lange, W.;
  • Item type:Article
    ID code:2852
    Dates:
    Date
    Event
    February 2003
    Published
    Subjects:Science > Physics > Optics. Light
    Department:Faculty of Science > Physics
    Depositing user: Mr Derek Boyle
    Date deposited:01 Feb 2007
    Last modified:11 Nov 2024 08:24
    URI:https://strathprints.strath.ac.uk/id/eprint/2852
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