Zinc oxide (ZnO) hybrid metasurfaces exhibiting broadly tunable topological properties.

ABSTRACT: Extreme light confinement observed in periodic photonic structures, such as the vortex singularities in momentum (k) space, has been associated with their topological nature. Consequently, by exploiting and tuning their topological properties, optical metasurfaces have been demonstrated as an attractive platform for active photonics. However, given the fact that most active media under external excitations can only provide limited refractive index change, the potential advancements offered by the topological character of active metasurfaces have remained mostly unexplored. Zinc oxide (ZnO), which has recently exhibited optically-induced extraordinarily large permittivity modulations at visible and near-infrared frequencies, is an excellent active material for dynamic metasurfaces ex

SUBMITTER: Wu Y 

PROVIDER: S-EPMC11501124 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature