Photosensitive chalcogenide metasurfaces supporting bound states in the continuum

Elena Mikheeva, Kirill Koshelev, Duk Yong Choi, Sergey Kruk, Julien Lumeau, Redha Abdeddaim, Ivan Voznyuk, Stefan Enoch, Yuri Kivshar*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    40 Citations (Scopus)

    Abstract

    We study, both theoretically and experimentally, tunable metasurfaces supporting sharp Fano-resonances inspired by optical bound states in the continuum. We explore the use of arsenic trisulfide (a photosensitive chalcogenide glass) having optical properties which can be finely tuned by light absorption at the post-fabrication stage. We select the resonant wavelength of the metasurface corresponding to the energy below the arsenic trisulfide bandgap, and experimentally control the resonance spectral position via exposure to the light of energies above the bandgap.

    Original languageEnglish
    Pages (from-to)33847-33853
    Number of pages7
    JournalOptics Express
    Volume27
    Issue number23
    DOIs
    Publication statusPublished - 11 Nov 2019

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