Fig. 1: Nyquist sampling of bandlimited incident field.
From: Low-overhead distribution strategy for simulation and optimization of large-area metasurfaces
a Schematic of Nyquist sampling of the incident electric field, which is bandlimited because it is propagating. b Percent error in scattered field power versus spatial-extent of metasurface included in the simulation for a single jinc source placed 10 μm (green), 5 μm (blue), and 0.5 μm (black) from the metasurface. The full metasurface is a 25 μm × 25 μm metasurface with focal length of 10 μm, and the surface size on the x-axis of this convergence plot refers to the spatial-extent around the center of this metasurface that is included in the simulation. The y-axis relative error is computed assuming the simulation including the full metasurface is the converged result.
