Journal of the European Optical Society - Rapid publications, Vol 3 (2008)

Polarization conversion with a photonic crystal slab

M. Laroche, F. Marquier, C. Vandenbem, J.-J. Greffet


We show that a photonic crystal slab can enable efficient polarization conversion. Two mechanisms are identified. The first mechanism relies on the anisotropy of the bulk properties of the metamaterial and is
mediated by interferences. The second mechanism is due to the resonant excitation of leaky surface waves at the interface of the photonic crystal. The latter is analogous to the polarization conversion by excitation of
surface plasmons on a metallic grating. This is another example of the possibility of mimicking plasmonics with photonic crystals.

© The Authors. All rights reserved. [DOI: 10.2971/jeos.2008.08038]

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