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Quasinormal mode solvers for resonators with dispersive materials

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.
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Contributor : Christophe Sauvan Connect in order to contact the contributor
Submitted on : Friday, April 17, 2020 - 4:09:11 PM
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Philippe Lalanne, W. Yan, A. Gras, Christophe Sauvan, Jean-Paul Hugonin, et al.. Quasinormal mode solvers for resonators with dispersive materials. Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2019, 36 (4), pp.686-704. ⟨10.1364/JOSAA.36.000686⟩. ⟨hal-02348417⟩



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