Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Nichtlineare optische Effekte und Lichtquellen III

Q 15.3: Vortrag

Montag, 19. März 2007, 17:00–17:15, 5J

Gradient induced position trapping and guiding of solitary structures in an LCLV single feedback experiment — •Carsten Cleff, Björn Gütlich, and Cornelia Denz — Institut für Angewandte Physik und Center for Nonlinear Science - Westfälische Wilhelms-Universität Münster - Corrensstraße 2, 48149 Münster, Germany

Solitary structures are localised spots, which are interesting for optical data processing because of their binary features. For potential applications, control of the solitary structures is required, because of mutual interaction and spontaneous dynamics. We use an incoherent external amplitude control in an LCLV single feedback experiment to control the static and dynamic positions of the solitary structures. The interaction of stationary and drifting solitary structures with different spatial intensity distributions (e.g. conus, hexagonal latices, obstacles, linestructures etc) is studied. The control method allows to arrange stationary solitary structures in arbitrary geometries whereas the possibility of traping depends on the wavelength of the trapgeometrie. Trapping can also be induced with a conus intensity distribution. We show that the induced velocity depends linearly on the conus gradient while the solitary structure is attracted to the conus. Also, the interaction of drifting solitary structures with line structures is investigated. The guiding of drifting solitary structures by these lines is demonstrated. External amplitude control also enables to control the velocity of drifting solitary structures and to create a position selector.