2018/11/28 by P. Lalanne, W. Yan, A. Gras +16 · 1 citation
Physics and Astronomy · #physics.comp-ph #physics.optics
paper · pdf · doi:10.1364/josaa.36.000686
published as J. Opt. Soc. Am. A 36, 686 (2019) · 10 figures
arxiv created 2018/11/28 · arxiv updated 2019/04/02
Optical resonators are widely used in modern photonics. Their spectral response and temporal dynamics are fundamentally driven by their natural resonances, the so-called quasinormal modes (QNMs), with complex frequencies. For optical resonators made of dispersive materials, the QNM computation requires solving a nonlinear eigenvalue problem. This rises a difficulty that is only scarcely documented in the literature. We review our recent efforts for implementing efficient and accurate QNM-solvers for computing and normalizing the QNMs of micro- and nano-resonators made of highly-dispersive materials. We benchmark several methods for three geometries, a two-dimensional plasmonic crystal, a two-dimensional metal grating, and a three-dimensional nanopatch antenna on a metal substrate, in the perspective to elaborate standards for the computation of resonance modes.