Hybrid states of Tamm plasmon polaritons in nanostructures with Bi-substituted iron garnets

Abstract

The work presents the results of investigation of hybrid states of Tamm plasmon polaritons (TPP) in magnetoplasmonic nanostructures (MPNS) based on Bi-substituted iron garnet (Bi:IG) and Au layers and nanoparticles. To study the interaction of resonances, two MPNS were synthesized with gold-coated dielectric layer of gradient thickness. It was shown the difference in properties of model MPNS with hybrid state of TPP - Fabry-Perot and a single TPP excitation. It was suggested to use the hybrid state to increase the sensitivity of optical sensors.