Dynamic beam steering with all-dielectric electro-optic III-V multiple-quantum-well metasurfaces.

ABSTRACT: Tunable metasurfaces enable dynamical control of the key constitutive properties of light at a subwavelength scale. To date, electrically tunable metasurfaces at near-infrared wavelengths have been realized using free carrier modulation, and switching of thermo-optical, liquid crystal and phase change media. However, the highest performance and lowest loss discrete optoelectronic modulators exploit the electro-optic effect in multiple-quantum-well heterostructures. Here, we report an all-dielectric active metasurface based on electro-optically tunable III-V multiple-quantum-wells patterned into subwavelength elements that each supports a hybrid Mie-guided mode resonance. The quantum-confined Stark effect actively modulates this volumetric hybrid resonance, and we observe a relative reflect

SUBMITTER: Wu PC 

PROVIDER: S-EPMC6692380 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature