Berlin 2008 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 27: Photonic crystals III
HL 27.4: Vortrag
Dienstag, 26. Februar 2008, 16:45–17:00, EW 203
Retrieving angle dependent effective parameters of metamaterials — •Christoph Menzel1, Thomas Paul1, Carsten Rockstuhl1, Thomas Pertsch2, and Falk Lederer1 — 1Institut für Festkörpertheorie- und optik, Friedrich-Schiller-Universität Jena, Max-Wien Platz 1, D-07743, Jena, Deutschland — 2Institut für angewandte Physik, Friedrich-Schiller-Universität Jena, Max-Wien Platz 1, D-07743, Jena, Deutschland
The retrieval of effective parameters of metamaterials (MM) can be made with various approaches. The most common employs the reflected and transmitted amplitude at a finite MM slab. Inverting the analytical expression for reflection and transmission at a slab composed of a homogenous isotropic media having an arbitrary permittivity and permeability, allows to solve for them. This technique, and all the other approaches, are employed up to now only for normal incidence; providing only insufficient insights into the MM properties. For example, applying MMs as a perfect lens requires them to have an angle independent effective permittivity and permeability of both being -1, which has yet to be elucidated. In this contribution we outline how to extend this algorithm to predict the effective properties as a function of the angle of incidence and the polarization. The necessary requirements and the assumptions on the media's properties are outlined. The algorithm is applied exemplarily to determine the angle dependent properties of a fishnet structure. The properties are investigated as a function of the number of layers the MM is made of.