Dresden 2011 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 85: Poster Session II

HL 85.3: Poster

Donnerstag, 17. März 2011, 18:00–21:00, P4

Modelling Hertzian Point Dipoles Using the Fourier Modal Method — •Benjamin Lutz, Thomas Zebrowski, Sabine Essig, and Kurt Busch — Institut für Theoretische Festkörperphysik and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany

The experimental realizations of quantum dots, e.g., in photonic crystal waveguides and cavities, motivate the incorporation of Hertzian point dipoles in computational methods such as the Fourier Modal Method (FMM) that are capable of dealing with periodic structures. Since periodicity is broken by a single source it is necessary to isolate the unit cell with perfectly matched layers (PMLs). Thus we present the results of an implementation that isolates sources with PMLs in the lateral plane of the three-dimensional computational domain. We optimized the parameters of the PMLs by comparing the analytical field distribution of a Hertzian point dipole with the simulations. In addition we investigated the influence of adaptive coordinates on the convergence behavior in such a setup.