  We use time-domain numerical simulations of a two-dimensional (2D) scattering
system to study the interaction of a collection of emitters resonantly coupled
to an Anderson-localized mode. For a small electric field intensity, we observe
the strong coupling between the emitters and the mode, which is characterized
by linear Rabi oscillations. Remarkably, a larger intensity induces non-linear
interaction between the emitters and the mode, referred to as the dynamical
Stark effect, resulting in non-linear Rabi oscillations. The transition between
both regimes is observed and an analytical model is proposed which accurately
describes our numerical observations.
