Plasmon spectroscopy of metallic nanoparticles above flat dielectric substrates.
We numerically analyze the spectral properties of localized plasmon resonances in metal nanoparticles when these are above a dielectric substrate. This analysis is performed as a function of the various parameters involved in the problem (relative optical properties, particle-substrate separation, angle of incidence, etc.). It can be shown that from the spectral behavior of the resonance in the far field, information about particle near-field interactions can be obtained.
Moreno
F
F
Grupo de Optica, Departamento de Física Aplicada, Universidad de Cantabria, Avda, Los Castros, 39005 Santander, Spain. morenof@unican.es
González
F
F
Saiz
J M
JM