Trichromatic and Tri-polarization-channel Holography with Non-interleaved Dielectric Metasurface

TL;DR

This paper introduces a non-interleaved TiO2 metasurface holography that encodes three independent phase profiles into orthogonal polarization bases, enabling high-quality, efficient trichromatic vectorial holography across the visible spectrum.

Contribution

It presents a novel non-interleaved metasurface design that overcomes polarization crosstalk and efficiency issues, enabling triple-channel, high-fidelity holography with minimal interference.

Findings

Achieved near-zero crosstalk between three polarization channels.

Demonstrated high-efficiency, high-quality RGB holography.

Enabled advanced applications like data storage and polarization imaging.

Abstract

Metasurfaces hold great potentials for advanced holographic display with extraordinary information capacity and pixel sizes in an ultrathin flat profile. Dual-polarization channel to encode two independent phase profiles or spatially multiplexed meta-holography by interleaved metasurfaces are captivated popular solutions to projecting multiplexed and vectorial images. However, the intrinsic limit of orthogonal polarization-channels, their crosstalk due to coupling between meta-atoms, and interleaving-induced degradation of efficiency and reconstructed image quality set great barriers for sophisticated meta-holography from being widely adopted. Here we report a non-interleaved TiO2 metasurface holography, and three distinct phase profiles are encoded into three orthogonal polarization bases with almost zero crosstalk. The corresponding three independently constructed intensity profiles are therefore assigned to trichromatic (RGB) beams, resulting in high-quality and high-efficiency vectorial meta-holography in the whole visible regime. Our strategy presents an unconventionally advanced holographic scheme by synergizing trichromatic colors and tri-polarization channels, simply realized with a minimalist non-interleaved metasurface. Our work unlocks the metasurface's potentials on massive information storage, polarization optics, polarimetric imaging, holographic data encryption, etc.