Dynamics of Morphology-Dependent Resonances by Openness in Dielectric Disk for TE polarization

TL;DR

This paper investigates how the openness of a dielectric microdisk influences morphology-dependent resonances for TE polarization, revealing avoided crossings and their effects on resonance properties.

Contribution

It reports the first observation of avoided resonance crossings between inner and outer resonances in an integrable billiard, affecting the Q-factor.

Findings

Avoided resonance crossings occur between inner and outer resonances.

Resonance exchange happens due to avoided crossings.

Q-factor of inner resonances is significantly affected.

Abstract

We have studied the dynamics of morphology-dependent resonances by openness in a dielectric microdisk for TE polarization. For the first time, we report that the dynamics exhibits avoided resonance crossings between inner and outer resonances even though the corresponding billiard is integrable. Due to the avoidance, inner and outer resonances can be exchanged and $Q$-factor of inner resonances is strongly affected. We analyze the diverse phenomena aroused from the dynamics including the avoided crossings.