Optical resonances in periodic surface arrays of metallic patches.
The transmission of light along the surface normal through an air-quartz-glass interface covered with a periodic array of thin, rectangular gold patches has been studied over the visible to infrared range. The various structures that are observed can be qualitatively understood as arising from standing-wave resonances set by the size and surroundings of the metal patches. A method-of-moments calculational scheme provides simulations in good quantitative agreement with the data. It is shown how the standing-wave picture provides a useful conceptual framework to understand and exploit such systems.
Schaich
W L
WL
Department of Physics, Indiana University, Bloomington, Indiana 47405, USA. schaich@indiana.edu
Schider
G
G
Krenn
J R
JR
Leitner
A
A
Aussenegg
F R
FR
Puscasu
I
I
Monacelli
B
B
Boreman
G
G