Regensburg 2010 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 54: Photonic Crystals: Theory
HL 54.7: Vortrag
Donnerstag, 25. März 2010, 15:30–15:45, H13
Resonant mode approximation for deriving optical properties of nanostructured materials — •Thomas Weiss1,2, Nikolay Gippius2,3, Sergei Tikhodeev3, and Harald Giessen1 — 14th Physics Institute, University of Stuttgart, Germany — 2LASMEA, University Blaise Pascal, France — 3General Pyhsics Institute, Russian Academy of Science, Russia
A lot of attention has been paid in the last years to the optical properties of nanostructured materials such as photonic crystals, metamaterials, and nanoantennas. The numerical calculation of these properties is often very time-consuming and, hence, simple models are desired for a fast approximation of the spectral behavior. We are going to present the resonant mode approximation, where the spectra can be derived from the calculation of the resonant mode. As a starting point, we use the scattering matrix approach for stacked periodic structures to obtain the resonant field distribution as well as the resonance position in the complex frequency plane. Then, we can approximate the scattering matrix for frequencies close to the resonance without any fitting procedures for describing the response of the structure on plane wave incidence. Several examples will be shown to elucidate the versatility of the method.