Abstract

For glass slides covered by two-dimensional array of polystyrene spheres with Au nanocaps on the top surface, polar Kerr rotation θK peaks occur in the visible region and shift with the polystyrene sphere diameter. The θK spectra arise from the spectral properties of the transmission/reflectance ratio. The observed tunable magneto-optical behavior has potential applications in magneto-optical filters.

© 2012 Optical Society of America

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