Excitation of Tamm plasmon polariton in ultrathin metals.

ABSTRACT: Tamm plasmon polariton (TPP) has unique localization and manipulability but cannot be excited with ultrathin metal films. We propose a strategy to realize generalized TPP (GTPP) in an ultrathin metal film as metainterface by introducing a low-loss dielectric Bragg reflector compensation layer, enabling effectively excitation of GTPP at its interface and achieving near-perfect absorption (~99.1%) at the resonant wavelength of 532 nanometers. This excitation has topological robustness, which fundamentally stems from its intrinsic tolerance to fabrication imperfections. A 14-channel narrowband absorbers chip based on GTPP has been fabricated. Compared to conventional structures without GTPP excitation, this device can lower the reverse saturable absorption threshold (~7.7 × 10^-5 na

SUBMITTER: Zhang 张江伟 J 

PROVIDER: S-EPMC12542941 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature