期刊
APPLIED PHYSICS LETTERS
卷 103, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4821444
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资金
- U.S. ARO MURI program [W911NF-09-1-0539]
Metasurfaces have recently emerged as an innovative approach to control light propagation with unprecedented capabilities. Different from previous work concentrating on steering far-field propagating waves, here we demonstrate that metallic metasurfaces can efficiently and effectively manipulate surface plasmons in the near-field regime. By engineering the dispersion of surface plasmons on a simple grating structure, we are able to realize normal, non-divergent as well as anomalous diffraction of surface plasmons. In particular, all-angle and broadband negative refraction of surface plasmons is achieved, largely attributed to the uniquely designed hyperbolic constant frequency contour of surface plasmons propagating along the metasurface. (C) 2013 AIP Publishing LLC.
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