Guiding light with surface exciton-polaritons in atomically thin superlattices.

ABSTRACT: Two-dimensional materials give access to the ultimate physical limits of photonics with appealing properties for ultracompact optical components such as waveguides and modulators. Specifically, in monolayer semiconductors, a strong excitonic resonance leads to a sharp oscillation in permittivity from positive to even negative values. This extreme optical response enables surface exciton-polaritons to guide visible light bound to an atomically thin layer. However, such ultrathin waveguides support a transverse electric (TE) mode with low confinement and a transverse magnetic (TM) mode with short propagation. Here, we propose that realistic semiconductor-insulator-semiconductor superlattices comprising monolayer WS₂ and hexagonal boron nitride (hBN) can improve the properties of b

SUBMITTER: Elrafei SA 

PROVIDER: S-EPMC11501836 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature