We report the observation of nonexponential decay of pulsed microwave transmission through quasi-one-dimensional random dielectric media signaling the breakdown of the diffusion model. The decay rate of transmission falls nearly linearly in time corresponding to a nearly Gaussian distribution of the coupling strengths of quasinormal electromagnetic modes to free space at the sample surfaces. Th...

Quasinormal Mode Expansion of Quadratic Observables Resonances determine the response resonant structures to excitation with light. The interaction can be quantified optical observables which are products two vector fields satisfying Maxwell's equations. Based on concepts from quasinormal mode theory and Riesz projection method, a general approach is proposed for decomposing these into sum regu...