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Title: Convection induced nonlinear-symmetry-breaking in wave mixing
Authors: Zambrini, Roberta, San Miguel, Maxi, Durniak, Céline, Taki, Majid
Keywords: [PACS] Optical solitons; nonlinear guided waves
[PACS] Patterns
[PACS] Dynamics of nonlinear optical systems including optical instabilities, optical chaos and complexity, and optical spatio–temporal dynamics
[PACS] Pattern selection; pattern formation (fluid dynamics)
Multiwave mixing
Light diffraction
Optical parametric oscillators
Ginzburg-Landau theory
Convection
Issue Date: 28-Jun-2005
Publisher: American Physical Society
Abstract: We show that the combined action of diffraction and convection (walk-off) in wave mixing processes leads to a nonlinear-symmetry-breaking in the generated travelling waves. The dynamics near to threshold is reduced to a Ginzburg-Landau model, showing an original dependence of the nonlinear self-coupling term on the convection. Analytical expressions of the intensity and the velocity of travelling waves emphasize the utmost importance of convection in this phenomenon. These predictions are in excellent agreement with the numerical solutions of the full dynamical model.
Description: 4 pages.-- PACS nrs.: 42.65.Tg, 89.75.Kd, 42.65.Sf, 47.54.+r.-- ArXiv pre-print available at: http://arxiv.org/abs/nlin/0503063v1.-- ©2005 The American Physical Society.
Publisher version (URL): http://dx.doi.org/10.1103/PhysRevE.72.025603
URI: http://hdl.handle.net/10261/7455
ISSN: 1539-3755
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Citation: Physical Review E 72, 025603 (R)(1-4) (2005)
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