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Comparisons of (a), (c) FDTD-synthesized and (b), (d) KA-synthesized microscope images of a rough surface with σh = 35 nm and lch = 170 nm: λ = 400 nm for (a) and (b); λ = 800 nm for (c) and (d). (e) Height map of the same surface. (f) Comparative FDTD-and KA-synthesized center pixel (x0, y0) spectra.
