Nature Communications (May 2017)

Ultrafast all-optical tuning of direct-gap semiconductor metasurfaces

  • Maxim R. Shcherbakov,
  • Sheng Liu,
  • Varvara V. Zubyuk,
  • Aleksandr Vaskin,
  • Polina P. Vabishchevich,
  • Gordon Keeler,
  • Thomas Pertsch,
  • Tatyana V. Dolgova,
  • Isabelle Staude,
  • Igal Brener,
  • Andrey A. Fedyanin

DOI
https://doi.org/10.1038/s41467-017-00019-3
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 6

Abstract

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Metasurfaces are not adjustable after fabrication, and a critical challenge is to realise a technique of tuning their optical properties that is both fast and efficient. Here, Shcherbakov et al. realise an ultrafast tunable metasurface with picosecond-scale large absolute reflectance modulation at low pump fluences.