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 93.3: Poster

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

Optical Investigations on Rolled-up Active Metamaterials including Plasmonic Structures — •Lena Simone Fohrmann, Stephan Schwaiger, Aune Koitmäe, Matthias Klingbeil, Andreas Rottler, Yuliya Stark, David Sonnenberg, Christian Heyn, Detlef Heitmann, and Stefan Mendach — Institut für Angewandte Physik, Universität Hamburg, Jungiusstraße 11, 20355 Hamburg

By the relaxation process of strained metal/semiconductor layers one can fabricate a rolled-up microtube whose wall consists of a metal/semiconductor superlattice representing a metamaterial. Quantum well heterostructures embedded into the semiconductor component enhance the transmission through the rolled-up metamaterial upon optical pumping [1]. A silver grating is integrated into these active metamaterials to investigate the coupling between surface plasmons on the silver grating and the quantum well. Simulations show that the integration of grating structures in rolled-up active metamaterials influences the transmission of light through the material drastically [2]. In this work I present a fiber based transmission measurement setup which is able to measure the transmission enhancement of a rolled-up metamaterial depending on the polarization of the transmitted light. Furthermore I present first results showing a polarization dependent transmission enhancement of up to 3.5%. We gratefully acknowledge support from the Deutsche Forschungsgemeinschaft (DFG) through GrK 1286. [1] S. Schwaiger et al., Phys. Rev. B 84, 155325 (2011). [2] A. Rottler et al., J. Opt. Soc. Am. B 28, 2402 (2011).