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Showing 1–2 of 2 results
Advanced filters: Author: Aleksandr Vaskin Clear advanced filters

  • Frequency mixers are hard to achieve at optical frequencies because it is difficult to meet different phase-matching conditions. Here, the authors show that GaAs metasurfaces can mix laser beams to generate eleven new wavelengths through different nonlinear optical processes occurring simultaneously.

    • Sheng Liu
    • Polina P. Vabishchevich
    • Igal Brener
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-6

  • 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.

    • Maxim R. Shcherbakov
    • Sheng Liu
    • Andrey A. Fedyanin
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-6