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Berlin 2012 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 24: Quantum Chaos II

DY 24.1: Talk

Thursday, March 29, 2012, 11:30–11:45, MA 001

Localization of modes in a dielectric square resonator — •Stefan Bittner1, Barbara Dietz1, Jochen Isensee1, Maksim Miski-Oglu1, Achim Richter1,2, and Christopher Ripp11Institut für Kernphysik Darmstadt — 2ECT* Trento

The correspondence between ray and wave dynamics in dielectric cavities is of high interest due to their applications as microlasers or sensors, and they are used to study the signatures of chaos in open wave-dynamical systems. We present microwave experiments with a dielectric square resonator made of alumina. The frequency spectrum and field distributions were measured and analyzed. Unlike the closed square cavity, the dielectric square resonator is not an integrable system. The field distributions, however, show scarlike patterns and are localised on families of certain classical trajectories. We use a simple model based on the classical ray-dynamics to describe them and obtain good agreement for almost all modes. The work presented in this talk was supported by the DFG within SFB 634.

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