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Secondary bifurcations of hexagonal patterns in a nonlinear optical system: alkali metal vapor in a single-mirror arrangement

AuthorsGomila, Damià ; Ackemann, Thorsten; Grosse Westhoff, Edgar; Colet, Pere ; Colet, Pere ; Lange, Wulfhard
KeywordsSecondary bifurcations
Nonlinear optics
Issue Date24-Mar-2004
CitationPhysical Review E 69, 036205 (1-12) (2004)
AbstractSecondary bifurcations of hexagonal patterns are analyzed in a model of a single-mirror arrangement with an alkali metal vapor as the nonlinear medium. A stability analysis of the hexagonal structures is performed numerically. Depending on the wavenumber of the hexagons different instabilities are predicted. Some of them take place at a finite wavenumber and result in the formation of structures with twelve spatial modes. These structures are compared with those observed experimentally.
Description12 pages.-- PACS nrs.: 89.75.Kd, 42.65.Sf, 47.54.+r, 47.20.Ky.
Appears in Collections:(IFISC) Artículos
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