Multipole spatial vector solitons.
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We introduce the concept of multipole spatial optical vector solitons associated with higher-order guided modes trapped by a soliton-induced waveguide in a bulk medium. Such stationary localized waves include previously predicted vortex- and dipole-mode vector solitons and also describe new higher-order vector solitons and necklace-type beams. We present the theoretical and experimental results of the structure, formation, and instability development of the quadrupole vector solitons.
author list (cited authors)
Desyatnikov, A. S., Neshev, D., Ostrovskaya, E. A., Kivshar, Y. S., Krolikowski, W., Luther-Davies, B., García-Ripoll, J. J., & Pérez-García, V. M.