Polarization tomography of metallic nanohole arrays

Details Polarization tomography of metallic nanohole arrays Polarization tomography of metallic nanohole arrays

2004-05-26

arxiv.org/abs/physics/0405141v1

Physics

Optics

4 pages, 3 figures, 1 table, submitted to PRL

Scientific paper

10.1364/OL.30.000090

We report polarization tomography experiments on metallic nanohole arrays with square and hexagonal symmetry. As a main result, we find that a fully polarized input beam is partly depolarized after transmission through a nanohole array. This loss of polarization coherence is found to be anisotropic, i.e. it depends on the polarization state of the input beam. The depolarization is ascribed to a combination of two factors: i) the nonlocal response of the array due to surface plasmon propagation, ii) the non-plane wave nature of a practical input beam.

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