Article

Controlling near-field optical intensities in metal nanoparticle systems by polarization pulse shaping

Technische Universität Dresden Institute for Materials Science Dresden Germany; Max Planck Institute for the Physics of Complex Systems Dresden Germany
Applied Physics B (impact factor: 2.19). 04/2012; 100(1):195-206. DOI:10.1007/s00340-010-3991-0

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.

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Keywords

Coherent control
 
different parts
 
fields
 
intensity localization
 
localized hot spots
 
nano-scale
 
nanoparticles
 
near-fields
 
plane incident wave
 
promising tool
 
random nanoparticles
 

G. Piredda