Dresden 2017 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 61: Posters - Quantum Systems

DY 61.1: Poster

Donnerstag, 23. März 2017, 17:00–19:30, P1A

Perturbation theory for asymmetric deformed optical microdisk cavities — •Julius Kullig and Jan Wiersig — Institut für Theoretische Physik, Otto-von-Guericke-Universität Magdeburg, Postfach 4120, D-39016 Magdeburg, Germany

Optical microdisk cavities confine light into very small volumes for long times. Via slight boundary deformations the cavity can be designated for a desired application; e.g. for unidirectional light emission or as sensor device. However, in real experiments slight deformations destroy mirror-reflection symmetry either intended or unintended via production tolerances. Therefore we have generalized the perturbation theory for microdisk cavities to treat such asymmetric deformations. This allows us to describe interesting non-Hermitian phenomena like copropagation of optical modes in the (counter-)clockwise direction inside the cavity. The derived analytic formulas are demonstrated at two generic boundary shapes, the spiral and the double-notched circle where a good agreement to the numerical boundary element method is observed.