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SKM 2023 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 23: Optical Properties (joint session HL/CPP)

CPP 23.4: Talk

Tuesday, March 28, 2023, 10:15–10:30, POT 112

Eigenmodes and Polarization Structure of Coupled Elliptical Microcavities — •Johannes Düreth1, Simon Betzold1, Monika Emmerling1, Antonina Bieganowska2, Jürgen Ohmer3, Utz Fischer3, Sven Höfling1, and Sebastian Klembt11Technische Physik, RCCM and Würzburg-Dresden Cluster of Excellence ct.qmat, University of Würzburg, Germany — 2Faculty of Problems of Fundamental Technology, Department of Experimental Physics, Laboratory for Optical Spectroscopy of Nanostructures, Wroclaw, Poland — 3Department of Biochemistry, University of Würzburg, Germany

Elliptical potentials give rise to a set of eigenmodes called Ince-Gaussian modes. Contrary to hemispherical potentials, the geometric shape leads to a mode splitting of the otherwise degenerate fundamental mode. Theoretically, this behaviour can be exploited to realize interesting topological phenomena like non-reciprocal transport, the non-hermitian skin-effect or engineer artificial gauge fields. On the way to an experimental implementation of such systems, the singular building blocks of these photonic potentials - single and coupled elliptical potentials - have to be experimentally studied.

Here we present an investigation of the mode splitting and polarisation in single elliptical microcavities, as well as an examination of the coupling between differently angled ellipses.

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