Stable three-component vortex solitons, whose third-harmonic part is an anti-vortex with charge -1, are predicted in a dual-period quasi-phase-matched lithium-niobate photonic crystal.
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Vortex solitons in quasi-phase-matched photonic crystals with the third harmonic generation
Stable three-component vortex solitons, whose third-harmonic part is an anti-vortex with charge -1, are predicted in a dual-period quasi-phase-matched lithium-niobate photonic crystal.