title: Cross conversion between surface plasmon polaritons and quasicylindrical waves.
abstract: The optical properties of textured metallic surfaces are governed by the scattering of surface plasmon polaritons (SPPs) and of quasicylindrical waves (CWs), which are both excited by the nano-objects located on the surface. We study here a fundamental scattering process of these fields, namely, the cross conversion of a CW into a SPP. We first show that this inelastic process is inevitable in multi-nano-object ensembles and then propose a procedure enabling a rigorous calculation of the cross conversion scattering coefficients. Additionally, by mapping this intricate process to a much simpler one, we derive general and simple expressions for the cross conversion efficiency. All predictions are carefully supported by fully vectorial computational results.
authors.affiliation: Laboratoire Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud, Campus Polytechnique, 91127 Palaiseau cedex, France.
authors.forename: X Y
authors.initials: XY
authors.lastname: Yang
authors.forename: H T
authors.initials: HT
authors.lastname: Liu
authors.forename: P
authors.initials: P
authors.lastname: Lalanne