Giant coupled, multiplicative enhancement of optical emissions from fractal aggregate/microcavity composites

Summary form only given. The giant enhancement of the optical response in metal nanocomposites and thin metallic films containing nanoscale surface features has been intensively studied in recent years. This enhancement is associated with the excitation of surface plasmons, collective electromagnetic modes whose characteristics are strongly dependent on the geometrical structure of the metallic component of the medium. In the present paper, we demonstrate that huge, multiplicative enhancement factors are obtained under the simultaneous, combined action of two resonant processes when the emitting species (dye) is adsorbed onto metal fractal aggregates contained within high-Q microcavities.