Modulation of surface phonon polaritons in MoO₃ via dynamic doping of SiC substrate.

ABSTRACT: Polar biaxial crystals with extreme anisotropy hold promise for the spatial control and the manipulation of polaritons, as they can undergo topological transitions. However, taking advantage of these unique properties for nanophotonic devices requires to find mechanisms to modulate dynamically the material response. Here, we present a study on the propagation of surface phonon polaritons (SPhPs) in a photonic architecture based on a thin layer of α-MoO₃ deposited on a semiconducting 4H-SiC substrate, whose carrier density can be tuned through photoinduction. By employing this system, we establish a comprehensive polaritonic platform where the propagation of the hybridized SPhPs can be manipulated dynamically due to their coupling with the electron plasma. Specifically, we demons

SUBMITTER: Garcia-Pomar JL 

PROVIDER: S-EPMC11744456 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature