Extreme Optical Field Confinement and Enhancement in a Plasmonic Picopatch within a Nanoparticle-on-Mirror Resonator

Jinna He, Mario Zapata-Herrera, Xabier Arrieta +4

Plasmonic resonances in metallic nanogaps can confine light into nanometric regions, but reaching modes of volume $\approx 1$ nm${}^3$ remains challenging. We present a detailed theo…