Abstract
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 raises 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 nanoresonators 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, with the perspective to elaborate standards for the computation of resonance modes.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
A. Gras, P. Lalanne, and M. Duruflé
J. Opt. Soc. Am. A 37(7) 1219-1228 (2020)
Philip Trøst Kristensen, Kathrin Herrmann, Francesco Intravaia, and Kurt Busch
Adv. Opt. Photon. 12(3) 612-708 (2020)
Guillaume Demésy, Tong Wu, Yoann Brûlé, Frédéric Zolla, André Nicolet, Philippe Lalanne, and Boris Gralak
J. Opt. Soc. Am. A 40(10) 1947-1958 (2023)