A dual-asymmetry compensation strategy cancels substrate-induced radiation to recover tunable bound states in the continuum with infinite Q-factor and polarization vortex in substrate-supported photonic crystal slabs.
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The study isolates far-field radiation from bulk, edge, and corner eigenmodes in a finite 2D SSH plasmonic nanoparticle array, proving antisymmetric modes are darker with higher Q-factors and that bulk Γ-modes are dark due to out-of-plane symmetry while edge/corner modes require extra in-plane order
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Recovery of tunable bound states in the continuum
A dual-asymmetry compensation strategy cancels substrate-induced radiation to recover tunable bound states in the continuum with infinite Q-factor and polarization vortex in substrate-supported photonic crystal slabs.
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Far-field radiation of bulk, edge and corner eigenmodes from a finite 2D Su-Schrieffer-Heeger plasmonic lattice
The study isolates far-field radiation from bulk, edge, and corner eigenmodes in a finite 2D SSH plasmonic nanoparticle array, proving antisymmetric modes are darker with higher Q-factors and that bulk Γ-modes are dark due to out-of-plane symmetry while edge/corner modes require extra in-plane order