Berlin 2012 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 93: Poster Session: Metal-Semiconductor Hybrid Systems, Plasmonic Systems / Photonic Crystals / Carbon: Diamond & CNT / Quantum Information Systems

HL 93.7: Poster

Donnerstag, 29. März 2012, 16:00–19:00, Poster D

Transformation optics with radial metamaterials — •Daniel Diedrich, Andreas Rottler, Detlef Heitmann, and Stefan Mendach — Institute of Applied Physics, University of Hamburg, Germany

Metamaterials are artificially structured materials which obtain their optical properties from the structure of the unit cell rather than from the constituent materials.

In this poster we discuss the possible realizations of transformation-optics devices with radial metamaterials, e.g. for cylindrical cloaking [1]. To obtain the required anisotropic permittivity values, we utilized finite-integration technique simulations and investigated the properties of a composite material made of silver spheres embedded into a PMMA host. By varying the distances and hence the interaction strength between the silver spheres, one can control the change in the permittivity.

With this method, a design of a cylindrical cloaking device operating in the visible regime was achieved. Furthermore we introduce designs for devices with an isotropic permittivity distribution, like the optical black hole or the Luneburg lens.

We gratefully acknowledge support by the DFG via the Graduiertenkolleg 1286.

[1] W. Cai, U.K. Chettiar, A.V. Kildishev, V.M. Shalaev, Nature Photonics 1, 224-227 (2007).