Fig. 4
From: Displacement-mediated bound states in the continuum in all-dielectric superlattice metasurfaces
Quasi-BIC modes for x-polarized normal incidences. a Transmission (red curve) and reflection (blue curve) spectra of the superlattice metasurface with the same parameters as Fig. 2a. b The transmission spectra with varying displacement △d. c and d Extinction cross-section spectra by multipolar expansion of the superlattice metasurface with different modes for x-polarized normal incidences. e and f The near-field distribution of resonant mode 3 at λ = 785 nm. g and h The near-field distribution of resonant mode 4 at λ = 955 nm