Tight-binding description of polarization waves in periodic arrays of metal dots

Virginie Lousse and Jean-Pol Vigneron
Laboratoire de Physique du Solide,
Facultés Universitaires Notre Dame de la Paix,
Rue de Bruxelles 61, B-5000 Namur, Belgium

We consider the plasmon structure of an periodic arrays of metal dots separated by a dielectric medium. the electromagnetic modes are described by polarization waves, expressed in a basis of localized plasmon modes associated with the isolated metal dot. These tight-binding modes are used to give an interpretation of the photonic bands obtained in more standard ways, i.e., plan wave expansions.