Out-of-plane reflection and refraction of light by anisotropic optical antenna metasurfaces with phase discontinuities

Nano Lett. 2012 Mar 14;12(3):1702-6. doi: 10.1021/nl300204s. Epub 2012 Feb 27.


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.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Anisotropy
  • Computer Simulation
  • Equipment Design
  • Equipment Failure Analysis
  • Models, Theoretical*
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Optical Devices*
  • Particle Size
  • Photometry / instrumentation*
  • Refractometry / instrumentation*
  • Scattering, Radiation