2011/07/31 by Robert Filter, Jing Qi, Carsten Rockstuhl +2 · 2 citations
Engineering · Physics and Astronomy · #Photonic Crystals and Applications #Photonic and Optical Devices #Plasmonic and Surface Plasmon Research #physics.optics
paper · pdf · doi:10.1103/physrevb.85.125429
published as Physical Review B 85, 125429 (2012)
openalex publication_date 2012/03/21 · arxiv created 2012/06/14 · arxiv updated 2012/06/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
An analytical approach is provided for describing the resonance properties of optical nanoantennas made of a stack of homogeneous disks, i.e., circular patch nanoantennas. It consists in analytically calculating the phase accumulation of surface plasmon polaritons across the resonator and an additional contribution from the complex reflection coefficient at the antenna termination. This makes the theory self-contained with no need for fitting parameters. The very antenna resonances are then explained by a simple Fabry-Perot resonator model. Predictions are compared to rigorous simulations and show excellent agreement. Using this analytical model, circular antennas can be tuned by varying the composition of the stack.