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arXiv · 2206.13863

Inverse Design in the Complex Plane: Manipulating Quasi-Normal Modes

James R Capers·Dean A Patient·Simon A R Horsley
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Abstract

Utilising the fact that the frequency response of a material can be decomposed into the quasi-normal modes supported by the system, we present two methods to directly manipulate the complex frequencies of quasi-normal modes in the complex plane. We first consider an `eigen-permittivity' approach that allows one to find how to shift the permittivity of the structure everywhere in order to place a single quasi-normal mode at a desired complex frequency. Secondly, we then use perturbation theory for quasi-normal modes to iteratively change the structure until a given selection of quasi-normal modes occur at desired complex frequencies.

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James R Capers, Dean A Patient, Simon A R Horsley. 2022-11-11. Inverse Design in the Complex Plane: Manipulating Quasi-Normal Modes. https://doi.org/10.1103/physreva.106.053523

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