Berlin 2012 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 17: Plasmonic Systems

HL 17.4: Vortrag

Montag, 26. März 2012, 15:45–16:00, EW 203

Rolled-up active plasmonic metamaterials — •Stephan Schwaiger, Aune Koitmäe, Lena Simone Fohrmann, Matthias Klingbeil, Andreas Rottler, Jochen Kerbst, Markus Bröll, Yuliya Stark, David Sonnenberg, Christian Heyn, Detlef Heitmann, and Stefan Mendach — Institut für Angewandte Physik, Universität Hamburg, Jungiusstraße 11, 20355 Hamburg

Using the relaxation process of strained semiconductor layers [1] we fabricate microtubes whose wall represent three-dimensional metamaterials consisting of alternating layers of metal (Ag) and semiconductor (AlIn)GaAs. I will present the results of the optical investigations of these microtube metamaterials including our latest findings. Be means of transmission measurements and finite difference time domain simulations we could show that these microtube metamaterials are promising candidates for rolled-up hyperlenses [2]. Furthermore, we demonstrated that the transmission through the metamaterial can be enhanced by integrating an optically active quantum well into the semiconductor [3]. In the next step we embedded a grating into the metamaterial to investigate the interaction of the embedded quantum well and possible surface plasmon polariton excitation on the Ag grating. We gratefully acknowledge support from the Deutsche Forschungsgemeinschaft (DFG) through GrK 1286. [1] V. Ya. Prinz et al., Physica E 6, 828 (2000). [2] S. Schwaiger et al., Phys. Rev. Lett. 102, 163903 (2009). [3] S. Schwaiger et al., Phys. Rev. B 84, 155325 (2011).