Transmission-type photonic doping for high-efficiency epsilon-near-zero supercoupling.

ABSTRACT: Supercoupling effect is an exotic and counterintuitive physical phenomenon of epsilon-near-zero (ENZ) media, in which the light can be "squeezed" and tunneled through flexible channels substantially narrower than its wavelength. Theoretically, ENZ channels with infinitely small widths perform ideal supercoupling with full energy transmission and zero-phase advance. As a feasible solution to demonstrate ENZ supercoupling through a finite-width channel, photonic doping can assist the light in squeezing, but the resonant dopant introduces inevitable losses. Here, we propose an approach of transmission-type photonic doping to achieve proximate ideal ENZ supercoupling. In contrast to the conventional resonance-type photonic doping, our proposed transmission-type doping replaces high-quality-fac

SUBMITTER: Yan W 

PROVIDER: S-EPMC10547686 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature