Low loss photonic nanocavity via dark magnetic dipole resonant mode near metal.

ABSTRACT: The dielectric-semiconductor-dielectric-metal 4 layered structure is a well-established configuration to support TM hybrid plasmonic modes, which have demonstrated significant advantages over pure photonic modes in structures without metal to achieve low loss resonant cavities at sub-diffraction limited volumes. The photonic modes with TE characteristics supported by the same 4 layered structure, on the other hand, are less studied. Here we show that a low loss photonic mode with TE₀₁ characteristics exists in the dielectric-semiconductor-dielectric-metal 4 layered structure if a truncated cylindrical disk is chosen as the semiconductor core. This mode exhibits the lowest cavity loss among all resonant modes, including both pure photonic and hybrid plasmonic modes, at cavity rad

SUBMITTER: Liu N 

PROVIDER: S-EPMC6242897 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature