Original Article

Citation: Light: Science & Applications (2015) 4, e306; doi:10.1038/lsa.2015.79
Published online 3 July 2015

Wavevector Selective Metasurfaces and Tunnel Vision Filters
Open

Vassili A Fedotov1, Jan Wallauer2, Markus Walther2, Mauro Perino1,3, Nikitas Papasimakis1 and Nikolay I Zheludev1,4

  1. 1 Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Southampton, SO17 1BJ, UK
  2. 2Department of Molecular and Optical Physics, University of Freiburg, D-79104 Freiburg, Germany
  3. 3Department of Information Engineering, University of Padova, Padova, Italy
  4. 4Centre for Disruptive Photonic Technologies, TPI, Nanyang Technological University, 637371 Singapore, Singapore.

Correspondence: VA Fedotov, Email: vaf@orc.soton.ac.uk

Received 2 December 2014; Revised 30 March 2015; Accepted 30 March 2015

Top

Abstract

Metasurfaces offer unprecedented flexibility in the design and control of light propagation, replacing bulk optical components and exhibiting exotic optical effects. One of the basic properties of the metasurfaces, which renders them as frequency selective surfaces, is the ability to transmit or reflect radiation within a narrow frequency band that can be engineered on demand. Here we introduce and demonstrate experimentally in the THz domain the concept of wavevector selective surfaces – metasurfaces transparent only within a narrow range of light propagation directions operating effectively as tunnel vision filters. Practical implementations of the new concept include applications in wavefront manipulation, observational instruments, vision and free-space communication in light-scattering environments.

Keywords:

flat optics; metafilms; metasurfaces; planar metamaterials; wavefront manipulation