Quasi-normal mode expansion as a tool for the design of nanophotonic devices
1 Zuse Institute Berlin, Takustraße 7, 14195 Berlin, Germany
2 JCMwave GmbH, Bolivarallee 22, 14050 Berlin, Germany
Published online: 20 August 2020
Many nanophotonic devices rely on the excitation of photonic resonances to enhance light-matter interaction. The understanding of the resonances is therefore of a key importance to facilitate the design of such devices. These resonances may be analyzed by use of the quasi-normal mode (QNM) theory. Here, we illustrate how QNM analysis may help study and design resonant nanophotonic devices. We will in particular use the QNM expansion of far-field quantities based on Riesz projection to design optical antennas.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.