期刊
NANO LETTERS
卷 15, 期 6, 页码 3851-3858出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b00692
关键词
Optical antennas; metasurfaces; SNOM; near field; plasmonics
类别
资金
- Air Force Office of Scientific Research [FA9550-12-1-0289]
- Draper Laboratory
- ERC [258461]
- Spanish Ministry of Economy and Competitiveness [MAT2012-36580]
- European Research Council (ERC) [258461] Funding Source: European Research Council (ERC)
Phased-antenna metasurfaces can impart abrupt, spatially dependent changes to the amplitude, phase, and polarization of light and thus mold wavefronts in a desired fashion. Here we present an experimental and computational near-field study of metasurfaces based on near-resonant V-shaped antennas and connect their near- and far-field optical responses. We show that far fields can be obtained from limited, experimentally obtained knowledge of the near fields, paving the way for experimental near-field characterization of metasurfaces and other optical nanostructures and prediction of their far fields from the near-field measurements.
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