Dynamic Polarization‐Dependent Multicolor 3D Holography Based on Inverse‐Designed Single‐Cell Nanoprinting Metasurface

ABSTRACT With the pursuit of vivid display based on a light‐weight device, researchers draw more attention to multifunctional 3D display metasurface. Traditionally, polarization is not considered in single‐wavelength and full color 3D holography, which leads to the lack of an important channel in display and information storage. In this paper, a gradient descent algorithm is introduced to combine the polarization in single‐wavelength and full color 3D holography, the renewed algorithm greatly promotes the achievement of single‐wavelength and full color 3D holography. To make optimization less parameters, geometry phase‐only design strategy was adopted to acquire different holographic images under different polarizations. To make full color 3D holography display vividly, electrically‐driven liquid crystals (LCs) are introduced to acquire random combination of wavelengths in red, green, and blue regions to obtain 42 different holographic images in the experiment. Furthermore, ten wavelength‐based hyperspectral polarization‐dependent 3D holography with 60 channels is also demonstrated in simulation. For commercialization, a high‐refractive‐index TiO 2 particle‐doped resin‐based nanoprinting metasurface is introduced to make our designs come into practice on a large scale. Our efforts perfectly combine the modern design method and high‐throughput nanoprinting, paving the way for large applications of dynamic multiplexed 3D display via light‐weight, high‐throughput nanoprinting metasurface and LCs.