期刊
NANO LETTERS
卷 20, 期 10, 页码 7463-7468出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c02910
关键词
optical metasurfaces; holography; nonlinear metasurfaces; plasmonics
类别
资金
- National Natural Science Foundation of China [91950114, 11774145]
- Guangdong Provincial Innovation and Entrepreneurship Project [2017ZT07C071]
- Applied Science and Technology Project of Guangdong Science and Technology Department [2017B090918001]
- Hong Kong Research Grants Council [GRF: 12303217]
- LiaoNing Revitalization Talents Program [XLYC1807237]
- Shenzhen DRC project [[2018]1433]
In linear optics, the metasurface represents an ideal platform for encoding optical information because of its unprecedented abilities of manipulating the intensity, polarization, and phase of light wave with subwavelength meta-atoms. However, controlling various degrees of freedom of light in nonlinear optics remains elusive. Here, we propose a nonlinear plasmonic metasurface working in the near-infrared regime that can simultaneously encode optical images in the real and Fourier spaces. This is achieved by designing a diatomic meta-molecule, which enables the independent control of the nonlinear geometric phase, polarization, and intensity of second harmonic waves. The proposed nonlinear diatomic metasurface provides an ultracompact platform for implementing multidimensional optical information encoding and may hold great potential in optical information security and optical anticounterfeiting.
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