Frankfurt 2006 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 35: Poster Photonische Kristalle
Q 35.1: Poster
Dienstag, 14. März 2006, 16:30–18:30, Labsaal
All-optical switching in metallic photonic crystals — •Dietmar Nau1, Ralph P. Bertram2, Karsten Buse2, Thomas Zentgraf3, Jürgen Kuhl3, Sergei G. Tikhodeev4, and Harald Giessen5 — 1Institut für Angewandte Physik, Universität Bonn, Wegelerstraße 8, D-53115 Bonn — 2Physikalisches Institut, Universität Bonn, Wegelerstrasse 8, D-53115 Bonn — 3Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart — 4A. M. Prokhorov General Physics Institute RAS, Moscow 119991, Russia — 54. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart
Metallic photonic crystals slabs (MPCS) and photoaddressable polymers (PAP) have attracted a lot of interest recently. Both materials are considered to have the potential to be used in future optical device applications. In this work we combine a MPCS with an additional PAP-layer. We show that the optical properties of this metal-polymer compound system can be reversibly switched all-optically. The optical properties of the system are dominated by the pronounced and steep optical resonances of the MPCS. The large variable birefringence of PAP upon light illumination is used to shift the resonances spectrally. We used a pump-probe experiment to examine the influence of light polarization and exposure on the optical properties [1]. Large spectral shifts of the resonances as well as the reversibility of the switching effect are observed. Comparing the experimental results with scattering-matrix calculations reveals the underlying refractive index changes and allows a quantitative modeling of the compound system.
[1] D. Nau et al., Appl. Phys. B, in press (2006).