Frankfurt 2006 – scientific programme
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Q: Quantenoptik und Photonik
Q 35: Poster Photonische Kristalle
Q 35.17: Poster
Tuesday, March 14, 2006, 16:30–18:30, Labsaal
Metallo-dielectric photonic crystal superlattices — •T. Zentgraf1, A. Christ1,2, J. Kuhl1, N. Gippius3, S. Tikhodeev3, and H. Giessen1,4 — 1MPI für Festkörperforschung, Stuttgart, Germany — 2EPFL, Lausanne, Schweiz — 3General Physics Institute, Moscow, Russia — 4Viertes Physikalisches Institut, Universit*t Stuttgart, Germany
We experimentally and theoretically investigate the influence of periodic defects on the transmis- sion properties of one-dimensional metallo-dielectric photonic crystal slabs. The spectral positions and the excitation efficiencies of the quasiguided waveguide modes in the slab are determined by the reciprocal lattice vector and the structure factor of the supercells, respectively. We show that by in- troducing periodic defects in the wire position, the structure factor of the supercells can be strongly modifed. For a polarization of the light perpendicular to the wires, the coupling of higher order Bragg resonances of the lattice structure to localized nanowire plasmon resonances can sensitively controlled by the structure of the supercell. All experimental results show an excellent agreement with the theory.