Recent progress in liquid-crystal-tunable dielectric metasurfaces

Abstract

Typically, the functionality of an optical metasurface is “hard‐coded” in its fabricated design. However, it is highly desirable to dynamically tune or even freely program the metasurface functionality also after fabrication. Recently, we have demonstrated strong active tuning of spatially homogeneous Mie‐resonant silicon metasurface by integration into nematic liquid crystal cells. This talk will review our recent advances in this field. In particular, examples of dynamic wavefront control and emission pattern tuning will be discussed. Our results can be of interest for the realization of future metasurface-based devices that can be dynamically reconfigured on demand.