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.
© 2008 Optical Society of America
Optics at Surfaces
Original Manuscript: August 3, 2007
Revised Manuscript: November 26, 2007
Manuscript Accepted: December 5, 2007
Published: January 10, 2008
Cyrille Billaudeau, Stéphane Collin, Christophe Sauvan, Nathalie Bardou, Fabrice Pardo, and Jean-Luc Pelouard, "Angle-resolved transmission measurements through anisotropic two-dimensional plasmonic crystals," Opt. Lett. 33, 165-167 (2008)