Modal analysis of photonic and plasmonic resonators

Optics Express
J Zimmerling, R Remis

Abstract

Determining the electromagnetic field response of photonic and plasmonic resonators is a formidable task in general. Field expansions in terms of quasi-normal modes (QNMs) are often used, since only a few of these modes are typically required for an accurate field description. We show that by exploiting the structure of Maxwell's equations, conjugate-symmetric frequency-domain field expansions can be efficiently computed via a Lanczos-type algorithm. Dominant QNMs can be identified a posteriori with error control and without a priori mode selection. Discrete QNM approximations of resonating nanostructures are presented and the spontaneous decay rate of a quantum emitter is also considered.

References

Dec 1, 2018·Optics Letters·Frédéric ZollaGuillaume Demésy
May 3, 2019·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·P LalanneT Weiss
Jul 16, 2019·Optics Letters·Alexandre GrasPhilippe Lalanne

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