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 TiO₂ 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.