Figure 1 | Design and optical performance of the dual-functional metasurface. (IMAGE)
Caption
Figure 1 | Design and optical performance of the dual-functional metasurface. a Schematic illustration of the metasurface functionality, showing reflective color generation under white light and holographic image reconstruction under coherent light illumination. b Structural designs of the three meta-atoms, meta-atoms 1, 2, and 3, corresponding to green, brown, and magenta reflective colors, respectively. c Refractive index (n, black) and extinction coefficient (k, red) of hydrogenated amorphous silicon (a-Si:H). d Conversion efficiency of meta-atom 1 (green), meta-atom 2 (brown), and meta-atom 3 (magenta) across the visible wavelength range. e–g Electric field distributions in the xz-plane for meta-atoms 1, 2, and 3, respectively, under (i) x-polarized and (ii) y-polarized illumination. h Simulated phase shift (solid line) and conversion efficiency (dashed line) as functions of the meta-atom orientation angle for meta-atoms (i) 1, (ii) 2, and (iii) 3.
Credit
Junsuk Rho et al.
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CC BY