https://doi.org/10.1051/epjconf/202023805007
Modal expansion of optical far-field quantities using quasinormal modes
1 Zuse Institute Berlin, Takustraße 7, 14195 Berlin, Germany
2 JCMwave GmbH, Bolivarallee 22, 14050 Berlin, Germany
Published online: 20 August 2020
We discuss an approach for modal expansion of optical far-field quantities based on quasinormal modes (QNMs). The issue of the exponential divergence of QNMs is circumvented by contour integration of the far-field quantities involving resonance poles with negative and positive imaginary parts. A numerical realization of the approach is demonstrated by convergence studies for a nanophotonic system.
© 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.
