Simultaneous Full‐Color Printing and Holography Enabled by Centimeter‐Scale Plasmonic Metasurfaces

Abstract

Optical metasurfaces enable novel ways to locally manipulate light's amplitude, phase, and polarization, underpinning a newly viable technology for applications, such as high‐density optical storage, holography, and displays. Here, a high‐security‐level platform enabled by centimeter‐scale plasmonic metasurfaces with full‐color, high‐purity, and enhanced‐information‐capacity properties is proposed. Multiple types of independent information can be embedded into a single metamark using full parameters of light, including amplitude, phase, and polarization. Under incoherent white light, the metamark appears as a polarization‐ and angle‐encoded full‐color image with flexibly controlled hue, saturation, and brightness, while switching to multiwavelength holograms under coherent laser illumination. More importantly, for actual applications, the extremely shallow functional layer makes such centimeter‐scale plasmonic metamarks suitable for cost‐effective mass production processes. Considering these superior performances of the presented multifunctional plasmonic metasurfaces, this work may find wide applications in anticounterfeiting, information security, high‐density optical storage, and so forth.

Broadband and high-efficiency accelerating beam generation by dielectric catenary metasurfaces

“…Metasurface [15,16], which is composed of subwavelength structures, is one of the prospective choices due to its ability to achieve arbitrary wavefront manipulation at the subwavelength scale. Over the past decades, many exotic phenomena and extraordinary flat optical devices have been realized, such as broadband spin Hall effect [17,18], asymmetric photonic spin-orbit interactions [19][20][21], invisibility cloaks [22,23], full-color 3D holography [24,25], nanoprint-hologram display [26,27], achromatic metalens [28,29], among many others [30,31]. At the same time, metasurfaces have also been applied to generate self-accelerating beams in the spatial domain [32][33][34], and Airy surface plasmons have also been demonstrated via on-chip nanostructures [35][36][37].…”

Multifunctional Beam Manipulation at Telecommunication Wavelengths Enabled by an All‐Dielectric Metasurface Doublet

“…In particular, optical metasystems consisting of two or more metasurfaces have mainly been exploited to produce compact devices acting as retroreflectors, [ 22 ] spectrometers, [ 23 ] hyperspectral imagers, [ 24 ] and optical planar cameras. [ 25 ] While the aforementioned metasurfaces were developed to serve single functions, multifunctional metasurfaces that can perform multiple tasks have attracted considerable interest owing to their potential use as multifocal or achromatic lenses, [ 26–28 ] metadevices serving distinct wave‐manipulation functionalities, [ 29–35 ] imaging systems, [ 36–38 ] nonlinear coding metasurfaces, [ 39–41 ] and vector vortex beam (VVB) generators. [ 42,43 ] For instance, metasurfaces in the visible or millimeter‐wave regime have been applied to implement VVB generators leading to vortex beams with different topological charges, with the assistance of unit cells consisting of multiple nanoblocks/layers with different geometrical parameters.…”

Multistate Switching of Photonic Angular Momentum Coupling in Phase‐Change Metadevices

“…[ 2 ] As such, PSOIs appear in almost all basic optical processes and provide a robust, scalable, and high‐bandwidth toolbox for spin‐dependent manipulation of light. Early researches on symmetric PSOIs have achieved many exotic phenomena and fantastic flat optical devices, such as broadband spin Hall effect, [ 7,8 ] full‐color printing, and holography, [ 9,10 ] achromatic lenses, [ 11,12 ] ultrafast optical pulse shaping, [ 13 ] spatiotemporal light control, [ 14 ] among many others. [ 15–17 ] Current studies have aimed to exploit the fundamental principles of basic artificial structures to realize asymmetric PSOIs [ 18–21 ] and active tunability [ 22–26 ] using the external degrees of freedom.…”