Invited Article: Broadband highly efficient dielectric metadevices for polarization control

Sergey Kruk, Ben Hopkins, Ivan I. Kravchenko, Andrey Miroshnichenko, Dragomir N. Neshev, Yuri S. Kivshar

    Research output: Contribution to journalArticlepeer-review

    364 Citations (Scopus)

    Abstract

    Metadevices based on dielectric nanostructured surfaces with both electric and magnetic Mie-type resonances have resulted in the best efficiency to date for functional flat optics with only one disadvantage: a narrow operational bandwidth. Here we experimentally demonstrate broadband transparent all-dielectric metasurfaces for highly efficient polarization manipulation. We utilize the generalized Huygens principle, with a superposition of the scattering contributions from several electric and magnetic multipolar modes of the constituent meta-atoms, to achieve destructive interference in reflection over a large spectral bandwidth. By employing this novel concept, we demonstrate reflectionless (∼90% transmission) half-wave plates, quarter-wave plates, and vector beam q-plates that can operate across multiple telecom bands with ∼99% polarization conversion efficiency.

    Original languageEnglish
    Article number030801
    JournalAPL Photonics
    Volume1
    Issue number3
    DOIs
    Publication statusPublished - 1 Jun 2016

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