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Virtual hyperbolic metamaterials for manipulating radar signals in air

Author

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  • Zhaxylyk A. Kudyshev

    (University at Buffalo, The State University of New York)

  • Martin C. Richardson

    (The College of Optics and Photonics, Townes Laser Institute, University of Central Florida)

  • Natalia M. Litchinitser

    (University at Buffalo, The State University of New York)

Abstract

Microwave beam transmission and manipulation in the atmosphere is an important but difficult task. One of the major challenges in transmitting and routing microwaves in air is unavoidable divergence because of diffraction. Here we introduce and design virtual hyperbolic metamaterials (VHMMs) formed by an array of plasma channels in air as a result of self-focusing of an intense laser pulse, and show that such structure can be used to manipulate microwave beams in air. Hyperbolic, or indefinite, metamaterials are photonic structures that possess permittivity and/or permeability tensor elements of opposite sign with respect to one another along principal axes, resulting in a strong anisotropy. Our proof-of-concept results confirm that the proposed virtual hyperbolic metamaterial structure can be used for efficient beam collimation and for guiding radar signals around obstacles, opening a new paradigm for electromagnetic wave manipulation in air.

Suggested Citation

  • Zhaxylyk A. Kudyshev & Martin C. Richardson & Natalia M. Litchinitser, 2013. "Virtual hyperbolic metamaterials for manipulating radar signals in air," Nature Communications, Nature, vol. 4(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3557
    DOI: 10.1038/ncomms3557
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