Berlin 2012 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 17: Plasmonic Systems
HL 17.6: Talk
Monday, March 26, 2012, 16:15–16:30, EW 203
Optical properties of metal-organic hybrid microcavities — •Robert Brückner, Markas Sudzius, Susanne Hintschich, Hartmut Fröb, Vadim Lyssenko, and Karl Leo — Institut für Angewandte Photophysik, Technische Universität Dresden, D-01062 Dresden, Germany
We investigate the impact of the incorporation of a thin silver layer into a planar dielectric microcavity (MC). The MC is composed of a
λ/2-layer of the organic media Alq3 doped with 2wt% DCM sandwiched between two dielectric distributed Bragg reflectors (21 alternating layers of TiO2 and SiO2).
Using a µ-photoluminescence setup, we systematically study the transition from a single cavity mode into two optical Tamm states depending on the
thickness of the embedded silver layer [1]. Even for a silver layer of 40 nm thickness both new modes are only slightly damped, enabling lasing
in these metal organic hybrid devices. The eigenenergies of these modes strongly depend
on both the thickness of the silver layer and the adjacent dielectric layers. We show that both resonances cannot have the same wavelength indicating a clear
anticrossing behavior. We confirm the experimentally observed shift and splitting of the cavity mode into two anticrossing resonances via transfer matrix
calculations.
R. Brückner, et al. Phys. Rev. B, 83, 033405 (2011).