Angle-resolved transmission measurements through anisotropic two-dimensional plasmonic crystals.
We report on high-accuracy angle-resolved optical transmission measurements through anisotropic 2D plasmonic crystals made of gold films with large-area rectangular arrays of nanoscale square holes, deposited on GaAs substrates. The measurements reveal the dispersion relations of air-gold and gold-GaAs surface plasmon polaritons. The crystal anisotropy induces a separation between plasmonic modes propagating in different directions. Their symmetry and dispersion properties are discussed.
Billaudeau
Cyrille
C
Laboratoire de Photonique et de Nanostructures LPN-CNRS, Route de Nozay, 91460 Marcoussis, France.
Collin
Stéphane
S
Sauvan
Christophe
C
Bardou
Nathalie
N
Pardo
Fabrice
F
Pelouard
Jean-Luc
JL