Open AccessHybrid silicon/phase-change metasurfaces and nanoantennas for active nanophotonics
Author(s) -
Ivan S. Sinev,
Carlota Ruíz de Galarreta,
Pavel Trofimov,
Arseny Alexeev,
Jacopo Bertolotti,
C. David Wright
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1461/1/012164
Subject(s) - nanophotonics , plasmon , materials science , dielectric , optoelectronics , silicon , metamaterial , surface plasmon polariton , nanotechnology , optics , surface plasmon , physics
All-dielectric metasurfaces and nanoantennas offer unprecedented flexibility and efficiency of manipulation of light at the nanoscale. Still, the functionality of conventional dielectric-based devices is fixed-by-design, i.e. the response is locked-in at the fabrication stage. To address the challenges offered by modern nanophotonics, active, dynamic and reconfigurable control of such structures is required. Here, we demonstrate active all-dielectric devices enabled by embedding subwavelength chalcogenide phase-change material inclusions in the volume of main silicon nanoresonators. We validate the concept via the design and development of a metasurface for active spectral filtering in the near infrared and a subwavelength nanoantenna providing complete switching of surface plasmon-polariton directivity pattern.