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Enhanced transmission of light through periodic and chirped lattices of nanoholes

✍ Scribed by Alexander Minovich; Haroldo T. Hattori; Ian McKerracher; Hark Hoe Tan; Dragomir N. Neshev; Chennupati Jagadish; Yuri S. Kivshar

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
598 KB
Volume
282
Category
Article
ISSN
0030-4018

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✦ Synopsis

We study experimentally the transmission of light through periodic and chirped lattices of nanoholes perforated in an optically-thick gold film. We observe that the periodicity of the structure enhances the light transmission for specific wavelengths, and we analyze this effect theoretically by employing finite-difference time-domain numerical simulations. Furthermore, we demonstrate experimentally the possibilities for manipulation of the spectral transmission in quasi-periodic and chirped lattices consisting of square nanoholes with varying hole size or lattice periodicity.

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## Abstract The transmission of light through a metallic film stack on a transparent substrate, perforated with a periodic array of cylindrical holes/nanocavities, is studied. The structure is fabricated by using self‐assembled nanosphere lithography. Since one layer in the film stack is made of a