Tunable Full‐Color Vectorial Meta‐Holography

Abstract

Vectorial metasurface holograms ar realized through segmenting or interleaving nanostructures to modulate spatial polarization of the reconstructed holography on the imaging plane, but it is still a challenge to achieve full‐color vectorial meta‐holograms with subwavelength meta‐molecules and independent spatial polarization control of reconstructed images. Here, this problem is solved by multiplexing the hologram phase for one circularly polarized light and the conjugated hologram phase for another orthogonal circularly polarized light using only a single nanostructure and then interleaving three kinds of metasurfaces for red, green, and blue light in subwavelength meta‐molecules. By independent control of the phase difference of two overlapped circularly polarized holographic images for each color, the vectorial field on the imaging plane can be freely manipulated at the pixel scale and dynamically changed with the incident polarization. Therefore, the local color and even contrast of the reconstructed full‐color image can be tuned by selecting the incident and output polarization states, demonstrating great potentials in secure optical encryption and dynamic color display.

Integrated-resonant metadevices: a review

“…Fortunately, introducing IRUs into metasurfaces provides an excellent opportunity to address these shortcomings existing in metaholograms. [136][137][138][139][140][141][142][143][144][145][146][147][148][149][150][151][152][153][154] According to different combination approaches, IRUs can achieve multiple perfect phase responses under different incident conditions, such as various polarization states and wavelengths. Therefore, it is feasible to alter the hologram pattern.…”

Recent Advances and Prospects of Optical Metasurfaces

“…A recent work on full-color vectorial meta-holography also demonstrated the narrowband performance of c-silicon metasurfaces. 134 In addition, a 3Dintegrated metasurface for full-color holography, which integrates the holographic metasurface on a Fabry−Perot (FP) cavity-based color filter array, was proposed. 132 On the other hand, full-color holography is demonstrated using three independent polarization channels of meta-atoms, which are optimized by an algorithm and designed for broadband.…”

“…Based on finely designed c-silicon RGB sensitive meta-atoms and a double phase encoding method, the hue, saturation, and brightness of the holographic display can be simultaneously modulated. A recent work on full-color vectorial meta-holography also demonstrated the narrowband performance of c-silicon metasurfaces . In addition, a 3D-integrated metasurface for full-color holography, which integrates the holographic metasurface on a Fabry–Perot (FP) cavity-based color filter array, was proposed .…”

Flexible Manipulated Interference Lithography Incorporating Modulated Optical Fourier Transform System

“…[15][16][17] Although profound performances have been achieved as mentioned above, multiplexing as well as multifunctional metasurfaces are widely explored to meet the opto-electrical market. [3,18,19] To integrate different channels or functionalities, types of spatial-variant structures are designed and arranged within planar segmented or interleaved pixels, [20][21][22][23] which is more difficult to be fabricated at the state of the art. Even with most commonly employed process like electron beam lithography or focused ion beam, suffering from their high-cost and time-consuming drawbacks, metasurfaces are not suitable for mass or large-area production.…”