Figure 7
From: THz-photonics transceivers by all-dielectric phonon-polariton nonlinear nanoantennas
Sketch of the proposed air-surrounded gold SRR and (b) its scattering spectrum. (c) The electric field norm around \(\lambda \) = 1.5 \(\upmu \)m reveals the LSPR. The corners and edges of the metallic structure are smoothed by a curvature of 5 nm to avoid numerical singularities. The plot is obtained by using COMSOL Multiphysics v5.5—https://www.comsol.com. (d) Schematics of the linear current distributions at the magnetic dipole, MD, and (e) electric dipole, ED, resonances of the SRR.
