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O: Fachverband Oberflächenphysik

O 59: Poster Session II (Nanostructures at surfaces: Dots, particles, clusters; Nanostructures at surfaces: arrays; Nanostructures at surfaces: Wires, tubes; Nanostructures at surfaces: Other; Plasmonics and nanooptics; Metal substrates: Epitaxy and growth; Metal substrates: Solid-liquid interfaces; Metal substrates: Adsoprtion of organic / bio molecules; Metal substrates: Adsoprtion of inorganic molecules; Metal substrates: Adsoprtion of O and/or H; Metal substrates: Clean surfaces; Density functional theory and beyond for real materials)

O 59.48: Poster

Mittwoch, 24. März 2010, 17:45–20:30, Poster B1

Time-Domain Simulations of Semiclassical Radiation Dynamics in Photonic Nanostructures — •Paolo Longo, Jens Niegemann, and Kurt Busch — Institut für Theoretische Festkörperphysik, Karlsruhe Institute of Technology

Versatile numerical techniques have become indispensable in the field of photonics. In particular, the Discontinuous Galerkin Time-Domain Method (DGTD) [1] combines key benefits from both classical finite element and finite-difference approaches such as adaptive meshing, a local coupling of neighboring elements and an explicit time-stepping scheme.

Within this framework, we go beyond the widely spread purely classical models of light-matter-interaction and investigate radiation dynamics in photonic systems by simultaneously evolving Maxwell’s equations and quantum mechanical equations of motion in time. In a first step, matter is modeled as an ensemble of two-level systems which results in the well-known Maxwell-Bloch equations [2]. Such semiclassical models automatically incorporate back-action effects, e.g., the non-Markovian radiation dynamics of emitters in photonic band-gap media.

[1] Niegemann et al., Photonics and Nanostructures: Fundamentals and Applications 7, 2 (2009)

[2] L. Allen and J. H. Eberly: Optical Resonance and Two-Level Atoms, Dover Publications (1987)