Observation of second-band vortex solitons in 2D photonic lattices |
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Authors: | Bartal Guy Manela Ofer Cohen Oren Fleischer Jason W Segev Mordechai |
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Institution: | Physics Department, Technion--Israel Institute of Technology, Haifa 32000, Israel. |
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Abstract: | We demonstrate second-band bright vortex-array solitons in photonic lattices. This constitutes the first experimental observation of higher-band solitons in any 2D periodic system. These solitons possess complex intensity and phase structures, yet they can be excited by a simple highly localized vortex-ring beam. Finally, we show that the linear diffraction of such beams exhibits preferential transport along the lattice axes. |
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