Fig. 3
From: Far-field probing of leaky topological states in all-dielectric metasurfaces
Extraction of parameters of the effective Hamiltonian by fitting. The experimental extinction spectra (1 − T/T0, where T0 is the substrate transmittance) are fitted by the analytical model Eq. (8) for a, b shrunken and c, d expanded structures with a/R = 3.15 and a/R = 2.85, respectively. Fitting for two different angles of incidence a, c θ = 0 and b, d θ = 16° is shown
