Dresden 2009 – scientific programme
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O: Fachverband Oberflächenphysik
O 31: Nano-optics of metallic and semiconducting nanostructures (theory)
O 31.4: Talk
Wednesday, March 25, 2009, 11:15–11:30, SCH A216
From curved space to optical cloaking — •Tolga Ergin1, Nicolas Stenger1, Jonathan Mueller1, Jad Halimeh1, and Martin Wegener1,2 — 1Institut für Angewandte Physik, Universität Karlsruhe, 76131 Karlsruhe, Germany — 2Institut für Nanotechnologie, Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft, 76021 Karlsruhe, Germany
Transformation optics is a powerful approach to manipulate the propagation of electromagnetic waves [1]. Here, the curvature of space is mimicked by an anisotropic metamaterial, which is described by effective medium theory [2,3]. An interesting application of such composite metal-dielectric metamaterials is a non-resonant optical cloak. We present full-wave finite element simulations of feasible cloak designs in homogeneous medium approximation as well as in full geometry. Real world losses as well as microscopic phenomena are discussed and possible ways for the realization of such cloaking structures are shown.
[1] U. Leonhardt, Science 312, 1777 (2006)
[2] J.B. Pendry, et al., Science 312, 1780 (2006)
[3] W. Cai, et al., Nature Photonics 1, 224 (2007)