IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v5y2014i1d10.1038_ncomms4055.html
   My bibliography  Save this article

Broadband terahertz generation from metamaterials

Author

Listed:
  • Liang Luo

    (Iowa State University)

  • Ioannis Chatzakis

    (Iowa State University
    Present address: Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA)

  • Jigang Wang

    (Iowa State University)

  • Fabian B. P. Niesler

    (Institute of Applied Physics, Institute of Nanotechnology and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT))

  • Martin Wegener

    (Institute of Applied Physics, Institute of Nanotechnology and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT))

  • Thomas Koschny

    (Iowa State University)

  • Costas M. Soukoulis

    (Iowa State University
    Institute of Electronic Structure and Lasers (IESL), FORTH)

Abstract

The terahertz spectral regime, ranging from about 0.1–15 THz, is one of the least explored yet most technologically transformative spectral regions. One current challenge is to develop efficient and compact terahertz emitters/detectors with a broadband and gapless spectrum that can be tailored for various pump photon energies. Here we demonstrate efficient single-cycle broadband THz generation, ranging from about 0.1–4 THz, from a thin layer of split-ring resonators with few tens of nanometers thickness by pumping at the telecommunications wavelength of 1.5 μm (200 THz). The terahertz emission arises from exciting the magnetic-dipole resonance of the split-ring resonators and quickly decreases under off-resonance pumping. This, together with pump polarization dependence and power scaling of the terahertz emission, identifies the role of optically induced nonlinear currents in split-ring resonators. We also reveal a giant sheet nonlinear susceptibility ~10−16 m2 V−1 that far exceeds thin films and bulk non-centrosymmetric materials.

Suggested Citation

  • Liang Luo & Ioannis Chatzakis & Jigang Wang & Fabian B. P. Niesler & Martin Wegener & Thomas Koschny & Costas M. Soukoulis, 2014. "Broadband terahertz generation from metamaterials," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4055
    DOI: 10.1038/ncomms4055
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms4055
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms4055?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4055. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.