Antireflection High-Index Metasurfaces Combining Mie and Fabry-Pérot Resonances

Research output: Contribution to journalJournal article – Annual report year: 2019Researchpeer-review

  • Author: Cordaro, Andrea

    Stanford University, United States

  • Author: Van De Groep, Jorik

    Stanford University, United States

  • Author: Raza, Søren

    Department of Physics, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Pecora, Emanuele Francesco

    Stanford University, United States

  • Author: Priolo, Francesco

    University of Catania, Italy

  • Author: Brongersma, Mark L

    Stanford University, United States

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Minimizing reflection losses is required for the efficient operation of a wide range of optical components. Antireflection coatings supporting Fabry-Pérot resonances are commonly used to solve this problem and can be applied on an industrial scale. Recent work has shown that reflections can also be reduced by placing an array of high-index nanostructures on a surface. In such coatings, antireflection is achieved by tailoring the scattering by optical Mie resonances. Here, we design and fabricate Si metasurfaces that combine both Fabry-Pérot and Mie resonances in a single metasurface to realize a multiresonant broadband antireflection response. We optically characterize the metasurfaces demonstrating 4.1% AM1.5-averaged reflectance across the visible spectrum (425-900 nm). Our metasurface design strategy is generally applicable to different materials and frequency ranges, making our approach relevant for a broad variety of applications.

Original languageEnglish
JournalACS Photonics
Issue number2
Pages (from-to)453-459
Number of pages7
Publication statusPublished - 2019
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Anti-reflection coating (ARC), Effective medium, Fabry-Pérot resonances, Metasurface, Mie resonators

ID: 170251679