Electrical Phase Modulation Based on Mid-Infrared Intersubband Polaritonic Metasurfaces.

ABSTRACT: Electrically reconfigurable metasurfaces that overcome the static limitations in controlling the fundamental properties of scattered light are opening new avenues for functional flat optics. This work proposes and experimentally demonstrates electrically phase-tunable mid-infrared metasurfaces based on the polaritonic coupling of Stark-tunable intersubband transitions in semiconductor heterostructures and electromagnetic modes in plasmonic nanoresonators. In the applied voltage range of -3 to +3 V, the local phase tuning of the light reflects from the metasurface, which enables the electrical control of the polarization state and wavefront of the reflected wave. Electrical beam polarization control, electrical beam diffraction control, and electrical beam steering are experimentally demons

SUBMITTER: Chung H 

PROVIDER: S-EPMC10238174 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature