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Magnetic hyperbolic optical metamaterials

Author

Listed:
  • Sergey S. Kruk

    (Nonlinear Physics Center and Center for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, The Australian National University)

  • Zi Jing Wong

    (NSF Nanoscale Science and Engineering Center, University of California)

  • Ekaterina Pshenay-Severin

    (Nonlinear Physics Center and Center for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, The Australian National University
    Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena)

  • Kevin O'Brien

    (NSF Nanoscale Science and Engineering Center, University of California)

  • Dragomir N. Neshev

    (Nonlinear Physics Center and Center for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, The Australian National University)

  • Yuri S. Kivshar

    (Nonlinear Physics Center and Center for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, The Australian National University)

  • Xiang Zhang

    (NSF Nanoscale Science and Engineering Center, University of California
    Lawrence Berkeley National Laboratory
    King Abdulaziz University)

Abstract

Strongly anisotropic media where the principal components of electric permittivity or magnetic permeability tensors have opposite signs are termed as hyperbolic media. Such media support propagating electromagnetic waves with extremely large wave vectors exhibiting unique optical properties. However, in all artificial and natural optical materials studied to date, the hyperbolic dispersion originates solely from the electric response. This restricts material functionality to one polarization of light and inhibits free-space impedance matching. Such restrictions can be overcome in media having components of opposite signs for both electric and magnetic tensors. Here we present the experimental demonstration of the magnetic hyperbolic dispersion in three-dimensional metamaterials. We measure metamaterial isofrequency contours and reveal the topological phase transition between the elliptic and hyperbolic dispersion. In the hyperbolic regime, we demonstrate the strong enhancement of thermal emission, which becomes directional, coherent and polarized. Our findings show the possibilities for realizing efficient impedance-matched hyperbolic media for unpolarized light.

Suggested Citation

  • Sergey S. Kruk & Zi Jing Wong & Ekaterina Pshenay-Severin & Kevin O'Brien & Dragomir N. Neshev & Yuri S. Kivshar & Xiang Zhang, 2016. "Magnetic hyperbolic optical metamaterials," Nature Communications, Nature, vol. 7(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11329
    DOI: 10.1038/ncomms11329
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