Out-of-Plane Reflection and Refraction of Light by Anisotropic Optical Antenna Metasurfaces with Phase Discontinuities
Out-of-Plane Reflection and Refraction of Light by Anisotropic Optical Antenna Metasurfaces with Phase Discontinuities
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DOI：
10.1021/nl300204s
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发表时间：
2012-03-01
期刊：
影响因子：
10.8
通讯作者：
Capasso, Federico
中科院分区：
文献类型：
--
作者：
Aieta, Francesco;Genevet, Patrice;Capasso, Federico
亚波长光学天线阵列的双折射实验表明存在离面折射现象。一个强大的三维（3D）扩展最近证明的广义折射和反射定律表明，界面赋予一个切向波矢量的入射光导致异常光束，这在一般情况下是非共面的入射光束。折射波束方向可以通过改变入射平面和天线阵列之间的角度来控制。
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.