Observation of higher-order solitons in defocusing waveguide arrays

Eugene Smirnov, Christian E. Rüter, Detlef Kip, Yaroslav V. Kartashov, Lluis Torner
2007 Optics Letters  
We observe experimentally higher-order solitons in waveguide arrays with defocusing saturable nonlinearity. Such solitons can comprise several in-phase bright spots and are stable above a critical power threshold. We elucidate the impact of the nonlinearity saturation on the domains of existence and stability of the observed complex soliton states.
doi:10.1364/ol.32.001950 pmid:17603624 fatcat:jk6ymieusjdmjp26le7ojhpfpy