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Here we study a simple way of controlling the emitted fields ofsub-wavelength nanometric sources. The system consists of arrays ofnanoparticles (NPs) embedded in optical active media. The key concept is thecareful tuning of NP's damping factors, which changes the eigenmode's decayrates of the whole array. This, at long time, leads to a locking of relativephases and frequencies of individual localized-surfaces-plasmons (LSPs) and,thus, controlls the emitted field. The amplitude of the LSP's oscillations canbe kept constant by embedding the system in optical active media. In the caseof full loss compensation, this implies that, not only the relative phases, butalso the amplitudes of the LSPs remain fixed, leading us, additionally, tointerpret the process as a new example of synchronization. The proposedapproach can be used as a general way of controlling and designing theelectromagnetic fields emitted by nanometric sources, which can findapplications in optoelectronic, nanoscale lithography and probing microscopy.

Tailoring optical fields emitted by nanometric sources