Berlin 2008 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 24: Photonic crystals II
HL 24.12: Vortrag
Dienstag, 26. Februar 2008, 12:30–12:45, EW 202
Simulation of Modified Radiation Dynamics using Higher-Order Methods — •Jens Niegemann1,2,3, Lasha Tkeshlashvili1,2,3, and Kurt Busch1,2,3 — 1Institut für Theoretische Festkörperphysik, Universität Karlsruhe — 2DFG Forschungszentrum Center for Functional Nanostructures (CFN), Universität Karlsruhe — 3Karlsruhe School of Optics & Photonics (KSOP), Universität Karlsruhe
Since the original proposal of photonic crystals, the modification of radiation dynamics was considered a feature of fundamental interest. Here, we use higher-order time-domain calculations of the coupled Maxwell-Bloch-equations in order to investigate the influence of photonic crystals on the decay of initially excited 2-level atoms. In particular, we investigate the effects of finite sample sizes as well as the influence of non-radiative transitions and dephasing. All calculations are performed through a discontinuous Galerkin finite element technique. This method allows to accuratly model complex geometries while it still maintains flexibility and reasonable performance. Thus, it is very well suited to study a large variety of experimentally relevant systems.