Influence of nanoscale cutoff in random self-affine fractal silver surfaces on the excitation of localized optical modes.
We report rigorous numerical calculations of the near field scattered from rough, one-dimensional self-affine fractal silver surfaces. We show that fractal lower-scale cutoff (decreased to the order of tens of nanometers) has a strong effect on excitation and strength of localized optical modes, leading to very large enhancements of the intensity (larger than 10(4)) and fluctuations of the electric field.
Sánchez-Gil
J A
JA
García-Ramos
J V
JV
Méndez
E R
ER