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.
© 2003 Optical Society of America
Original Manuscript: October 16, 2002
Revised Manuscript: April 16, 2003
Published: October 1, 2003
W. L. Schaich, G. Schider, J. R. Krenn, A. Leitner, F. R. Aussenegg, I. Puscasu, B. Monacelli, and G. Boreman, "Optical resonances in periodic surface arrays of metallic patches," Appl. Opt. 42, 5714-5721 (2003)