Fig. 1. (a) The G–S algorithm of the typical hologram, (b) the G–S algorithm for the multiple-wavelength hologram, (c) the schematic diagram of the metasurface, (d) the transmission phase distributions of the rotated nanoholes, and (e) the reproduction for target images based on the metasurface hologram.

Fig. 2. (a) Part structure of the metasurface, (b) the target color doll, and the reproduced images as the metasurface is illuminated by the lights with wavelengths of 633 nm, 532 nm, and 425 nm, (c) simultaneously and (d)–(f) separately.

Fig. 3. Three-dimensional wavelength-multiplexing imaging with the reproduced images appearing at (a) (5.5, −5.5, 18), (−5.5, 0, 19), and (5.5, 5.5, 20) (in scale µm) for the wavelengths of 425 nm, 532 nm, and 633 nm and at (b) (5.5, 5.5, 18), (−5.5, 0, 19), and (5.5, −5.5, 20) (in scale µm) for the wavelengths of 633 nm, 532 nm, and 425 nm.

Fig. 4. (a) Experimental setup for measuring the reproduced pattern. (b) The SEM images of the metasurface sample. (c)–(e) The intensity distributions measured at different longitudinal positions with the wavelengths taking 450 nm, 532 nm, and 633 nm, respectively.

Fig. 5. Compound metasurfaces (a) interlaced by two sets of nanoholes and (d) produced by holography. Reproduced target patterns (b), (e) at z = 18 µm for λ₁ = 425 nm, z = 19 µm for λ₂ = 532 nm, and z = 20 µm for λ₃ = 633 nm with LCP light illumination and (c), (f) at z = 18 µm for λ₁ = 633 nm, z = 19 µm for λ₂ = 532 nm, and z = 20 µm for λ₃ = 425 nm with RCP light illumination. The inserted arrows denote the incident states of polarization, and the scale bars represent 5 µm.