Hannover 2003 – wissenschaftliches Programm

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Q: Quantenoptik

Q 49: Poster: Photonik

Q 49.20: Poster

Donnerstag, 27. März 2003, 16:30–18:30, Lichthof

Trimming of optical properties of two dimensional photonic crystal structures by photobleaching — •Markus Schmidt, Gunnar Boettger, Christian Liguda, and Manfred Eich — Technische Universitaet Hamburg-Harburg, Arbeitsbereich Materialien der Elektrotechnik und Optik, Eissendorfer Str. 38, 21073 Hamburg, Germany

We show our results of trimming the transmission characteristics of two dimensional moderate refractive index photonic crystal structures by photobleaching. The slab waveguide core was made of a polymer which contains nonlinear chromophores. These molecules change the refractive index under UV - illumination from 1.55 to 1.51 by photoreduction. Due to the lower index we see a clear spectral shift of the dielectric band egde. We also trimmed the resonance frequency of a two dimensional photonic crystal cavity. A good agreement between the experimental results and data which were done by finite difference time domain and plane wave calculations was achived.