Efficient polarization insensitive complex wavefront control using Huygens' metasurfaces based on dielectric resonant meta-atoms

TL;DR

This paper demonstrates a polarization-insensitive dielectric metasurface capable of complex wavefront control at telecom wavelengths, achieving high transmittance and imaging efficiency for practical holographic applications.

Contribution

The work presents the first experimental realization of a polarization-insensitive holographic metasurface based on dielectric resonant meta-atoms with high efficiency.

Findings

Achieved 82% transmittance efficiency.

Produced a hologram image with 40% imaging efficiency.

Demonstrated potential for practical flat optical devices.

Abstract

Subwavelength-thin metasurfaces have shown great promises for the control of optical wavefronts, thus opening new pathways for the development of efficient flat optics. In particular, Huygens' metasurfaces based on all-dielectric resonant meta-atoms have already shown a huge potential for practical applications with their polarization insensitivity and high transmittance efficiency. Here, we experimentally demonstrate a polarization insensitive holographic Huygens' metasurface based on dielectric resonant meta-atoms capable of complex wavefront control at telecom wavelengths. Our metasurface produces a hologram image in the far-field with 82% transmittance efficiency and 40% imaging efficiency. Such efficient complex wavefront control shows that Huygens' metasurfaces based on resonant dielectric meta-atoms are a big step towards practical applications of metasurfaces in wavefront design related technologies, including computer-generated holograms, ultra-thin optics, security and data storage devices.