Modal analysis of electromagnetic resonators: MAN software expansion to 2D materials and coupled systems

TL;DR

This paper updates the MAN software for electromagnetic resonator analysis, adding support for 2D materials, coupled systems, and direct Fano parameter evaluation, enhancing its modeling capabilities.

Contribution

The new version of MAN software introduces models for 2D materials, a coupled-QNM theory toolbox, and functions for direct Fano parameter calculation.

Findings

Supports 2D materials like graphene

Enables computation of coupling coefficients in coupled resonators

Allows direct evaluation of Fano parameters from QNM fields

Abstract

This work presents an updated version of the previously released freeware MAN (Modal Analysis of Nanoresonators) [Comput Phys Commun 284, 108627 (2023)], a software package designed to efficiently compute and normalize quasinormal modes (QNMs) and to use them for the analysis of the optical response of electromagnetic resonators. The current release introduces three major enhancements. First, Version 9 extends the capabilities of Version 8 by incorporating new models and functions dedicated to systems involving two-dimensional materials, such as graphene. Second, based on a newly developed coupled-QNM theory, a new toolbox has been implemented that enables the computation of the complex coupling coefficients between the modes of coupled resonators using the individual QNMs of the uncoupled cavities. Finally, we introduce new functions that allow for the direct evaluation of Fano parameters for the extinction cross-section directly from the QNM field distribution.