Berlin 2012 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 24: Quantum Chaos II
DY 24.1: Vortrag
Donnerstag, 29. März 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 Ripp1 — 1Institut 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.