Metal nanoparticle gratings: influence of dipolar particle interaction on the plasmon resonance
We probe the influence of grating effects on plasmon excitations in gold nanoparticles arranged in regular two-dimensional patterns. Samples produced by electron-beam lithography are investigated by femtosecond time-resolved and spectroscopic methods. We find a strong dependence of the plasmon lifetime and resonance wavelength on the grating constant.
Lamprecht
B
Institute for Experimental Physics, Karl-Franzens-University Graz and Erwin Schrodinger Institute for Nanoscale Research, Universitatsplatz 5, A-8010 Graz, Austria.
Schider
G
Lechner
RT
Ditlbacher
H
Krenn
JR
Leitner
A
Aussenegg
FR