Dynamic Display of Full-Stokes Vectorial Holography Based on Metasurfaces

Abstract

Metasurfaces with compact footprint and large information capacity bring unprecedented possibilities for the miniaturized optoelectronic systems. With the further exploration of intriguing wavefront tailoring possibilities, multiple dimensional multiplexing and dynamic modulation techniques combined with metasurface designs gradually become crucial research trends. Here, we utilize resonance effects and geometric phase of metasurfaces to simultaneously shape the amplitude, phase and polarization of light, and rebuild a vectorial holography with customized patterns and polarizations. By selecting the desired polarization combination continuously, dynamic display of vectorial meta-holography with 4-fold degeneracy is demonstrated. Such a method can precisely modulate the spatial phase and polarization distributions simultaneously at each frame, while the dynamic tunability is easy to implement based on polarization rotation. Such versatile and compact metasurfaces may provide promising solutions to dynamic and near-eye display, compact LiDAR, optical encryption, and date storage.

Active multiband varifocal metalenses based on orbital angular momentum division multiplexing

“…Metasurfaces composed of subwavelength antenna arrays promote the development of light optical devices 1 . The flourishing researches of metasurfaces have been extensively applicated in the field of waveplates 2 , 3 , holographic imaging 4 – 7 , optical information encryption 8 , 9 , and quantum communications 10 – 12 . In particular, metalenses, kinds of metasurfaces, have great application potential as a means to replace and surpass traditional optical lenses.…”

Metasurface‐Assisted Optical Encryption Carrying Camouflaged Information

“…Metasurface is an artificially planar‐structure material that has the superior capability of controlling DOF of light at subwavelength scale, [ 1–8 ] leading to a series of novel optical encryption technologies. [ 9–20 ] For nanoprinting, [ 21–24 ] these DOFs offer the possibility of encoding multiple meta‐images into different optical dimensions, thus improving the security and capacity of optical encryption. By modulating geometric dimension of single‐celled nanostructures in two orthogonal directions, two color meta‐images can be encoded with different polarization light.…”

“…Owing to the abundant degrees of freedom (DOF) of light (e.g., amplitude, phase, polarization, and frequency), optical encryption technology has significant advantages of multi-dimensionality, large capacity, high design freedom, and high security.Metasurface is an artificially planarstructure material that has the superior capability of controlling DOF of light at subwavelength scale, [1][2][3][4][5][6][7][8] leading to a series of novel optical encryption technologies. [9][10][11][12][13][14][15][16][17][18][19][20] For nanoprinting, [21][22][23][24] these DOFs offer the possibility of encoding multiple meta-images into different optical dimensions, thus improving the security and capacity of optical encryption. By modulating geometric dimension of single-celled nanostructures in two orthogonal directions, two color meta-images can be encoded with different polarization light.…”

High‐Efficiency Phase and Polarization Modulation Metasurfaces

“…Rotation of each antenna in the cell allows the polarization states of the scattered waves to be adjusted. Vector beam generation [ 13,28 ] and full‐polarization holograms [ 20,26,27,30,31 ] have also been demonstrated using all‐dielectric pillar or reflective bilayer metal structures. However, the diatomic metasurface operates for first‐order diffraction, which represents a barrier to carry out measurements in the terahertz band.…”