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Phased-array sources based on nonlinear metamaterial nanocavities

Author

Listed:
  • Omri Wolf

    (Center for Integrated Nanotechnologies, Sandia National Laboratories
    Sandia National Laboratories)

  • Salvatore Campione

    (Center for Integrated Nanotechnologies, Sandia National Laboratories
    Sandia National Laboratories)

  • Alexander Benz

    (Center for Integrated Nanotechnologies, Sandia National Laboratories
    Sandia National Laboratories)

  • Arvind P. Ravikumar

    (Princeton University)

  • Sheng Liu

    (Center for Integrated Nanotechnologies, Sandia National Laboratories
    Sandia National Laboratories)

  • Ting S. Luk

    (Center for Integrated Nanotechnologies, Sandia National Laboratories
    Sandia National Laboratories)

  • Emil A. Kadlec

    (Sandia National Laboratories)

  • Eric A. Shaner

    (Sandia National Laboratories)

  • John F. Klem

    (Sandia National Laboratories)

  • Michael B. Sinclair

    (Sandia National Laboratories)

  • Igal Brener

    (Center for Integrated Nanotechnologies, Sandia National Laboratories
    Sandia National Laboratories)

Abstract

Coherent superposition of light from subwavelength sources is an attractive prospect for the manipulation of the direction, shape and polarization of optical beams. This phenomenon constitutes the basis of phased arrays, commonly used at microwave and radio frequencies. Here we propose a new concept for phased-array sources at infrared frequencies based on metamaterial nanocavities coupled to a highly nonlinear semiconductor heterostructure. Optical pumping of the nanocavity induces a localized, phase-locked, nonlinear resonant polarization that acts as a source feed for a higher-order resonance of the nanocavity. Varying the nanocavity design enables the production of beams with arbitrary shape and polarization. As an example, we demonstrate two second harmonic phased-array sources that perform two optical functions at the second harmonic wavelength (∼5 μm): a beam splitter and a polarizing beam splitter. Proper design of the nanocavity and nonlinear heterostructure will enable such phased arrays to span most of the infrared spectrum.

Suggested Citation

  • Omri Wolf & Salvatore Campione & Alexander Benz & Arvind P. Ravikumar & Sheng Liu & Ting S. Luk & Emil A. Kadlec & Eric A. Shaner & John F. Klem & Michael B. Sinclair & Igal Brener, 2015. "Phased-array sources based on nonlinear metamaterial nanocavities," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8667
    DOI: 10.1038/ncomms8667
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