Lithography-free IR polarization converters via orthogonal in-plane phonons in α-MoO₃ flakes.

ABSTRACT: Exploiting polaritons in natural vdW materials has been successful in achieving extreme light confinement and low-loss optical devices and enabling simplified device integration. Recently, α-MoO₃ has been reported as a semiconducting biaxial vdW material capable of sustaining naturally orthogonal in-plane phonon polariton modes in IR. In this study, we investigate the polarization-dependent optical characteristics of cavities formed using α-MoO₃ to extend the degrees of freedom in the design of IR photonic components exploiting the in-plane anisotropy of this material. Polarization-dependent absorption over 80% in a multilayer Fabry-Perot structure with α-MoO₃ is reported without the need for nanoscale fabrication on the α-MoO₃. We observe coupli

SUBMITTER: Abedini Dereshgi S 

PROVIDER: S-EPMC7666183 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature