  Optical microcavity billiards are a paradigm of a mesoscopic model system for
quantum chaos. We demonstrate the action and origin of ray-wave correspondence
in real and phase space using far field emission characteristics and Husimi
functions. Whereas universality induced by the invariant-measure dominated far
field emission is known to be a feature shaping the properties of many lasing
optical microcavities, the situation changes in the presence of sources that we
discuss here. We investigate the source-induced dynamics and the resulting
limits of universality while we find ray-picture results to remain a useful
tool in order to understand the wave behaviour of optical microcavities with
sources. We demonstrate the source-induced dynamics in phase space from the
source ignition until a stationary regime is reached comparing results from
ray, ray-with-phase, and wave simulations and explore ray-wave correpondence.
