Two-dimensional higher-band vortex lattice solitons |
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Authors: | Manela Ofer Cohen Oren Bartal Guy Fleischer Jason W Segev Mordechai |
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Institution: | Department of Physics and Solid State Institute, Technion, Haifa 32000, Israel. |
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Abstract: | We study self-localized second-band vortex states in two-dimensional photonic lattices and find stable ring solitons whose phase forms an array of counterrotating vortices. We also identify composite solitons in which a second-band vortex is jointly trapped with a mode arising from the first band and study their stability. When such a composite entity is unstable, it disintegrates while exchanging angular momentum between its constituents, eventually stabilizing into another form of composite soliton. |
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