Dresden 2011 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 42: Poster I: Progress in Micro- and Nanopatterning: Techniques and Applications (jointly with O); Spins in Organic Materials; Ion Interactions with Nano Scale Materials; Organic Electronics and Photovoltaics; Plasmonics and Nanophotonics (jointly with HL and O); High-k and Low-k Dielectrics (jointly with DF); Organic Thin Films; Nanoengineered Thin Films; Layer Deposition Processes; Layer Properties: Electrical, Optical, and Mechanical Properties; Thin Film Characterisation: Structure Analysis and Composition; Application of Thin Films

DS 42.112: Poster

Mittwoch, 16. März 2011, 15:00–17:30, P1

Simulation of the ultrafast nonlinear optical response of metal slabs — •Mathias Wand, Torsten Meier, and Jens Förstner — Department Physik and CeOPP, Universität Paderborn, 33098 Paderborn, Germany

With the current rise of interest in plasmonic nanostructures [1], it has become apparent that the nonlocal and nonlinear optical properties of such systems can only be described properly by theoretical models beyond the classical free-electron Drude model.

We present a nonequilibrium ab initio method for calculating nonlinear and nonlocal optical effects in metallic slabs with a thickness of several nanometers. The numerical analysis is based on the full solution of the time-dependent Kohn-Sham equations [2] for a jellium system and allows to study the optical response of metal electrons subject to arbitrarily shaped intense light pulses. We find a strong localization of the generated second-harmonic current in the surface regions of the slabs [3].

1. M.W. Klein, C. Enkrich, M. Wegener, and S. Linden, Science 313, 502 (2006).

2. A. Castro, M.A.L. Marques, and A. Rubio, J. Chem. Phys. 121, 8 (2004).

3. M. Wand, A. Schindlmayr, T. Meier, and J. Förstner, phys. stat. sol., submitted (2010).