Regensburg 2013 – wissenschaftliches Programm
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DF: Fachverband Dielektrische Festkörper
DF 10: Optical and nonlinear optical properties, photonic
DF 10.8: Vortrag
Dienstag, 12. März 2013, 12:00–12:20, H11
Room-Temperature Lasing from Tamm Plasmon-Polaritons in an Organic Microcavity — •Andreas Mischok1, Robert Brückner1, Reinhard Scholz1, Vadim G. Lyssenko1, Markas Sudzius1, Susanne I. Hintschich1, Alexander A. Zakhidov2, Hartmut Fröb1, and Karl Leo1 — 1Institut für Angewandte Photophysik, George-Bähr-Str. 1, 01062 Dresden — 2Fraunhofer COMEDD, Maria-Reiche-Str. 2, 01109 Dresden
Organic solid state lasers combine a tunable emission spectrum and room-temperature operation with a comparably easy fabrication. In order to drive such devices electrically, high current densities must be transported, calling for highly conductive - and highly absorptive - metal electrodes.
In this work, we report stimulated emission in an organic-dielectric surface emitting microcavity with an embedded continuous silver layer of 40nm thickness, under non-resonant optical excitation. Despite the absorption introduced by the silver, the quality factor of the sample and the gain provided by the Alq3:DCM Host:Guest emitter system suffice to reach lasing from Tamm plasmon-polariton states. Knowledgeable design of the cavity multilayer stack minimizes the metal-induced absorption via a shift of the resonant cavity mode. Above the laser threshold, the excitation intensity can be increased at least 20 times without damage to the device. These results pave the way to an electrical contacting of the emitter and are essential for the future realisation of an electrically driven organic solid state laser.