Unidirectional Chiral Emission via Twisted Bi-layer Metasurfaces.

ABSTRACT: Controlling and channeling light emissions from unpolarized quantum dots into specific directions with chiral polarization remains a key challenge in modern photonics. Stacked metasurface designs offer a potential compact solution for chirality and directionality engineering. However, experimental observations of directional chiral radiation from resonant metasurfaces with quantum emitters remain obscure. In this paper, we present experimental observations of unidirectional chiral emission from a twisted bi-layer metasurface via multi-dimensional control, including twist angle, interlayer distance, and lateral displacement between the top and bottom layers, as enabled by doublet alignment lithography (DAL). First, maintaining alignment, the metasurface demonstrates a resonant intrinsic opt

SUBMITTER: Gromyko D 

PROVIDER: S-EPMC11557933 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature