期刊
NANO LETTERS
卷 12, 期 3, 页码 1702-1706出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl300204s
关键词
Plasmonics; optical antenna; metasurfaces; reflection; phase discontinuities; Snell's Law
类别
资金
- Defense Advanced Research Projects Agency (DARPA) N/MEMS [N66001-10-1-4008]
- Space and Naval Warfare Systems Center Pacific (SPAWAR)
- National Science Foundation
- Harvard Nanoscale Science and Engineering Center (NSEC) [NSF/PHY 06-46094]
- Center for Nanoscale Systems (CNS) at Harvard University
- Robert A. Welch Foundation [A-1261]
- European Communities [PIOF-GA-2009-235860]
Experiments on ultrathin anisotropic arrays of subwavelength optical antennas display out-of-plane refraction. A powerful three-dimensional (3D) extension of the recently demonstrated generalized laws of refraction and reflection shows that the interface imparts a tangential wavevector to the incident light leading to anomalous beams, which in general are noncoplanar with the incident beam. The refracted beam direction can be controlled by varying the angle between the plane of incidence and the antenna array.
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