• Truong, Minh Duy
• Liu, Haitao
• Weiss, T.
• Lalanne, Philippe
• Zschiedrich, L.
• Binkowski, F.
• Gralak, B.
• Zolla, F.
• Nicolet, André
• Zimmerling, J.
• Gras, A.
• Urbach, P.
• Hugonin, Jean-Paul
• Burger, S.
• Besbes, Mondher
• Yan, W.
• Sauvan, Christophe
• Remis, R.
• Demésy, Guillaume

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. ; Théorie et modélisation numérique des résonances optiques

Topics

• impedance spectroscopy
• two-dimensional
• normalizing