TY - GEN
T1 - Dynamic transmission control based on all-dielectric huygens metasurfaces
AU - Howes, Austin
AU - Wang, Wenyi
AU - Kravchenko, Ivan
AU - Valentine, Jason
N1 - Publisher Copyright:
© 2018 The Author(s).
PY - 2018
Y1 - 2018
N2 - Tunable metasurfaces open new doors for achieving dynamic wavefront manipulation in an ultracompact footprint. Dielectric metasurfaces are particularly attractive for this application due to their low-loss modes. However, their volumetric modes make them difficult to dynamically tune compared to plasmonic variants with strong field confinement. We overcome this challenge by combining dielectric resonators with an epsilon-near-zero (ENZ) mode in a thin film. By tuning the coupling between modes in the resonators and the ENZ thin film, active control over the transmittance amplitude is achieved. Operating at the wavelength of the Huygens mode, we demonstrate transmittance modulation with an on-state transmittance of 70% and a modulation depth of 31%. In addition, we create a tunable diffraction grating and demonstrate its potential use in beam steering applications. This approach provides a new avenue for high speed and low-power modulation of dielectric metasurfaces.
AB - Tunable metasurfaces open new doors for achieving dynamic wavefront manipulation in an ultracompact footprint. Dielectric metasurfaces are particularly attractive for this application due to their low-loss modes. However, their volumetric modes make them difficult to dynamically tune compared to plasmonic variants with strong field confinement. We overcome this challenge by combining dielectric resonators with an epsilon-near-zero (ENZ) mode in a thin film. By tuning the coupling between modes in the resonators and the ENZ thin film, active control over the transmittance amplitude is achieved. Operating at the wavelength of the Huygens mode, we demonstrate transmittance modulation with an on-state transmittance of 70% and a modulation depth of 31%. In addition, we create a tunable diffraction grating and demonstrate its potential use in beam steering applications. This approach provides a new avenue for high speed and low-power modulation of dielectric metasurfaces.
UR - http://www.scopus.com/inward/record.url?scp=85059380083&partnerID=8YFLogxK
U2 - 10.1364/FIO.2018.FW6E.5
DO - 10.1364/FIO.2018.FW6E.5
M3 - Conference contribution
AN - SCOPUS:85059380083
SN - 9781943580460
T3 - Optics InfoBase Conference Papers
BT - Frontiers in Optics, FIO 2018
PB - Optica Publishing Group (formerly OSA)
T2 - Frontiers in Optics, FIO 2018
Y2 - 16 September 2018 through 20 September 2018
ER -