Meta-hologram enabled by a double-face copper-cladded metasurface based on reflection-transmission amplitude coding

Here, we propose a double-face copper-cladded metahologram that can efficiently manipulate the amplitude of electromagnetic waves in both transmission and reflection spaces, depending on the polarization state of the incident electromagnetic wave. The proposed meta-hologram is validated by encoding the transmission-reflection amplitude information of two independent images into a single metasurface. The holographic images obtained from measurements agree qualitatively with simulation results. The proposed metasurface presents a novel, to the best of our knowledge, scheme for electromagnetic wavefront control in the whole space and overcomes the limitations of narrow frequency band operation. (C) 2021 Optical Society of America

Automated summary

A double-face copper-cladded metahologram is proposed, which can manipulate the amplitude of electromagnetic waves in both transmission and reflection spaces, offering a novel scheme for electromagnetic wavefront control.