Polarization tomography of metallic nanohole arrays.
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 as a result of surface-plasmon propagation and (ii) the non-plane-wave nature of a practical input beam.
Altewischer
Erwin
E
Huygens Laboratory, Leiden University, PO Box 9504, 2300 RA Leiden, The Netherlands. erwin@molphys.leidenuniv.nl
Genet
Cyriaque
C
van Exter
Martin P
MP
Woerdman
J P
JP
Alkemade
Paul F A
PF
van Zuuk
Arjan
A
van der Drift
Emile W J M
EW