Figure 2: Resonator design.
From: Phased-array sources based on nonlinear metamaterial nanocavities
(a) Real part of the z-component of the electric field, Ez, at the FF. (b) Squared magnitude of Ez at the FF, which is proportional to the nonlinear polarization. (c) Real part of Ez at the SH frequency. The maps in (a–c) are computed within the quantum well, at a depth of 150 nm below the resonator in a unit cell simulated with FDTD full-wave simulations. The black/white X marks the position of the plot in Fig. 3b. (d) SEM image of the fabricated nanocavities on the sample surface. Scale bar, 4 μm.
