Journal
NANO LETTERS
Volume 19, Issue 6, Pages 3976-3980Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.9b01298
Keywords
Asymmetric transmission; metasurface; plasmonics; phase control; polarization control; metasurface holography
Categories
Funding
- Deutsche Forschungsgemeinschaft through the Collaborated Research Center [TRR 142, 231447078]
- National Key R&D Program of China [2017YFB1002900]
- NSFC-DFG joint program (DFG) [ZE953/11-1]
- NSFC-DFG joint program (NSFC) [61861136010]
- National Natural Science Foundation of China [61775019]
Ask authors/readers for more resources
As flexible optical devices that can manipulate the phase and amplitude of light, metasurfaces would clearly benefit from directional optical properties. However, single layer metasurface systems consisting of two-dimensional nanoparticle arrays exhibit only a weak spatial asymmetry perpendicular to the surface and therefore have mostly symmetric transmission features. Here, we present a metasurface design principle for nonreciprocal polarization encryption of holographic images. Our approach is based on a two-layer plasmonic metasurface design that introduces a local asymmetry and generates a bidirectional functionality with full phase and amplitude control of the transmitted light. The encoded hologram is designed to appear in a particular linear cross-polarization channel, while it is disappearing in the reverse propagation direction. Hence, layered metasurface systems can feature asymmetric transmission with full phase and amplitude control and therefore expand the design freedom in nanoscale optical devices toward asymmetric information processing and security features for anticounterfeiting applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available