Berlin 2008 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 6: Photonic crystals I
HL 6.1: Vortrag
Montag, 25. Februar 2008, 09:30–09:45, EW 201
Ultrafast nonlinear switching dynamics in metallic photonic crystals — •Tolga Ergin1,2, Tilman Höner zu Siederdissen1,2, Markus Lippitz1,2, and Harald Giessen2 — 1Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart — 24. Physikalisches Institut, Universität Stuttgart, 70550 Stuttgart
We investigate one-dimensional photonic crystals consisting of periodically arranged alternating layers of a metal and a dielectric. Spectral windows of high transmission in these structures allow the exploitation of the nonlinear transmissive properties of the sample. Recent experiments suggest the possibility of suppressing these windows with a sub-picosecond response and picosecond recovery time by intense pulsed laser pumping. Our research deals with the temporal dynamics as well as intensity and wavelength dependencies of this effect. Understanding these yet unknown issues is essential for maximization of the differential transmission and thus for possible switching applications.