![comsol fdtd simulation comsol fdtd simulation](https://cdn.comsol.com/wordpress/sites/1/2020/12/COMSOL_Blog_ModelImgs_Micropump_ogImg.png)
See following demo to understand the usage. Coupled Toroidal Dipole Modes in Silicon Nanodisk Metasurface: Polarization Independent Narrow Band Absorption and Directional Emission. Optical Anapoles: Concepts and Applications.
![comsol fdtd simulation comsol fdtd simulation](https://www.beilstein-journals.org/bjnano/content/figures/2190-4286-9-209-2.png)
An Electromagnetic Multipole Expansion beyond the Long-Wavelength Approximation. Tatsuki Hinamto and Minoru Fujii "MENP: An Open-Source MATLAB Implementation of Multipole Expansion for Applications in Nanophotonics", arXiv:2011.03661 Supplementary references to implemented formulation We ask you to cite the following paper when you publish results obtained with MENP.
#COMSOL FDTD SIMULATION SOFTWARE#
This package is basically designed for the use with Lumerical FDTD solutions, but any software can be used by exporting four-dimensional (x,y,z,f) electric field and refractive index data as a MATLAB. For structural design and interpretation of physics in such systems, full-field simulation accoumpanied by multipole expansion is essential. The resultant multipolar interferences is opening up new opportunities to realize novel functionarity such as unidirectinal scattering (so-called Kerker condition), non-radiating optical Anapole state, and so on.
![comsol fdtd simulation comsol fdtd simulation](https://www.mdpi.com/sensors/sensors-20-03955/article_deploy/html/images/sensors-20-03955-g008.png)
In particular, recently emerged sub-wavelength Mie resonators which exhibit rich spectral features due to multipole resonances. Target users are researchers in the field of nanophotonics. It is also capable of multipole expansion under long-wavelength approximation to find a contribution of toroidal dipole moments (TD). It imports electric field distribution obtained by full-field simulation techniques (e.g., FDTD, FEM, etc.) and computes electric and magnetic multipoles (ED, MD, EQ, MQ) based on exact expression of multipole expansion. MENP is an open-source MATLAB-based package for multipole expansion based on induced current distributions in nanostructures. Multipole Expansion for NanoPhotonics (MENP) General