Unveiling the Mechanism of Phonon-Polariton Damping in α-MoO₃.

ABSTRACT: Phonon polaritons (PhPs), light coupled to lattice vibrations, in the highly anisotropic polar layered material molybdenum trioxide (α-MoO₃) are currently the focus of intense research efforts due to their extreme subwavelength field confinement, directional propagation, and unprecedented low losses. Nevertheless, prior research has primarily concentrated on exploiting the squeezing and steering capabilities of α-MoO₃ PhPs, without inquiring much into the dominant microscopic mechanism that determines their long lifetimes, which is key for their implementation in nanophotonic applications. This study delves into the fundamental processes that govern PhP damping in α-MoO₃ by combining ab initio calculations with scattering-type scanning near-field opt

SUBMITTER: Taboada-Gutierrez J 

PROVIDER: S-EPMC11413844 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature