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O: Fachverband Oberflächenphysik
O 58: Plasmonics and Nanooptics II: Light-Matter Interaction and Spectroscopy I
O 58.1: Talk
Wednesday, March 29, 2023, 15:00–15:15, WIL A317
Simultaneous Strong Coupling of the H- and J-Bands of Molecular Aggregates in Microcavities — •Roland Schäfer1, Lukas Böhner1, Manuela Schiek2,3, Klaus Meerholz1, and Klas Lindfors1 — 1Department für Chemie, Universität zu Köln, 50939 Köln, Germany — 2LIOS & ZONA, Johannes Kepler Universität, 4040 Linz, Austria — 3Institut für Physik, Carl von Ossietzky Universität Oldenburg, 26129 Oldenburg, Germany
We simultaneously strongly couple the H- and J-bands of aggregates of a merocyanine dye (HB238 [1]) to cavity photons. This is achieved by tuning the 3λ/2- and 1λ mode of a planar microcavity to the spectral positions of the H- and J-bands, respectively. Strong coupling behavior is confirmed via the observation of Rabi-splitting of both bands in angle-resolved reflectivity spectra.
Due to the orientation of the aggregates J-polaritons can be observed with s- and p-polarized light, while the H-polaritons can only be accessed with p-polarized light and a non-normal angle of incidence. Therefore, our system supports two or four polaritons, depending on the polarization, making it an interesting platform to study strong light-matter coupling.
[1] Bürckstümmer, H., et. al., Angew. Chem. Int. Ed. 2011, 50: 11628-11632.
Acknowledgment: This project is funded with support from the RTG-2591 "TIDE - Template-designed Organic Electronics" (Deutsche Forschungsgemeinschaft).