Regensburg 2013 – scientific programme

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O: Fachverband Oberflächenphysik

O 63: Plasmonics and Nanooptics V

O 63.4: Talk

Thursday, March 14, 2013, 11:15–11:30, H38

Simulation of Plasmonic Particles with MMP — •Ueli Koch, Jens Niegemann, and Christian Hafner — Institut für Feldtheorie und Höchstfrequenztechnik (IFH), ETH Zürich, Switzerland

The Multiple Multipole Program (MMP) is a Generalized Point Matching (GPM) method using analytical multipole expansions to solve Maxwell's equations in frequency domain. MMP is a well-established and highly flexible method for the simulation of photonic nanostructures. However, for three-dimensional systems it usually requires an experienced user to position the expansions and matching points in order to model the geometry accurately. Here, we present a novel mesh-based approach, which allows simulating a large variety of geometries without user interaction. Additionally, we adapted MMP for the calculation of electron-energy loss spectra (EELS). Our implementation has been validated against analytical solutions and by comparison with results from discontinuous Galerkin time-domain (DGTD) simulations. Finally, we discuss the possibility to employ layered Green's functions, which makes MMP a powerful tool for the accurate simulation of particles on layered substrates or membranes.