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Controlled observation of a nonequilibrium Ising-Bloch transition in a nonlinear optical cavity | | A. Esteban-Martin
; V. B. Taranenko
; J. Garcia
; G. J. de Valcarcel
; Eugenio Roldan
; | | Date: |
23 Nov 2004 | | Journal: | Phys. Rev. Lett. 94 (2005) 223903 | | Subject: | Pattern Formation and Solitons; Optics | nlin.PS physics.optics | | Abstract: | We describe the controlled observation of the nonequilibrium Ising-Bloch transition in a broad area nonlinear optical cavity, namely, a quasi-1D single longitudinal-mode photorefractive oscilator in a degenerate four-wave mixing configuration. Our experimental technique allows for the controlled injection of the domain walls. We use cavity detuning as control parameter and find that both Ising and Bloch walls can exist for the same detuning values within a certain interval of detunings, i.e., the Ising-Bloch transition is hysteretic in our case. A complex Ginzburg-Landau model is used for supporting the observations. | | Source: | arXiv, nlin.PS/0411048 | | Other source: | [GID 801352] pmid16090398 | | Services: | Forum | Review | PDF | Favorites | |
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