Figure 3
From: Dielectric Huygens’ Metasurface for High-Efficiency Hologram Operating in Transmission Mode
(a) Calculated hologram based on a 2 × 2 periodic arrangement. The school badge of HIT with resolution of 500 × 500 pixels is set to be the goal image and the distance between the hologram plane and image plane is 150 mm. The 500 × 500 pixels’ phase map is fabricated on a 450 × 450 μm2 footprint. (b) Holographic image captured in experiment and the zero order diffraction (bright spot) is blocked to avoid disturbance to the image. In order to avoid pattern distortion, the goal image is pre-compensated with a wide angle correction.
