ABSTRACT: Coherent control of near-fields in the proximity of nanoparticles is a promising tool for shaping the temporal and spatial
properties of light at the nano-scale. Numerical simulations on a series of progressively more complex metallic nanoparticle
systems were carried out to explore in detail the mechanisms of control. We find that an important element for the controllability
of intensity localization is the spatial variation of the phase in the near-field that is due either to the interference between
the plane incident wave and the near-field of the nanosystem or to the interference of fields generated by different parts
of the nanosystem. For a collection of random nanoparticles we show that it is possible to select the appearance of highly
localized hot spots.
Applied Physics B 04/2012; 100(1):195-206. · 2.19 Impact Factor