Efficient integral equation modeling of scattering by a gradient dielectric metasurface

Artificial materials for advanced applications in electromagnetics and mechanics

Open Access

Figure 4.

(a) Gradient dielectric metasurface (infinite Λ-periodic array of dielectric rectangular cylinders) with ε_c = ε_s = ε_d = 1, d = w = 180 nm, ε_g = 17.14 (Silicon), λ = 532 nm, Λ = 500 nm, N = 1, a₁ = 0, and s₁ = 0.5 Λ. (b) Amplitudes |r₀| and |r_–1| of the 0- and −1-order reflection coefficients versus the angle of incidence θ for the metasurface described in (a).

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