Journal
ACS PHOTONICS
Volume 6, Issue 11, Pages 2910-2916Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.9b01017
Keywords
metasurface; hologram; spin; full-color; 3D
Categories
Funding
- National Key R&D Program of China [2018YFB1107205, 2016YFA0301302]
- National Natural Science Foundation of China [61590933, 11474010, 11627803]
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The possibility to manipulate light fields with metasurfaces can facilitate more compact and efficient devices for encoding computer-generated holograms. However, most of the reconstructed holographic images for reported metasurfaces are either monochromatic or two-dimensional, limiting their applicability. Here, we design and fabricate a silicon metasurface, whose constituent meta-molecules are composed of three different kinds of meta-atoms capable of modulating red, green, and blue light independently. A modified Gerchberg-Saxton algorithm is utilized to retrieve the wavefront for the three-dimensional (3D) hologram. The reconstructed 3D full-color images can be switched by changing the helicity of the illuminating circularly polarized light. The spin-switched 3D full-color scenes greatly increase the information capacity of the device, which may find use in 3D dynamic displays, virtual reality, and data storage applications.
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