title: The Goos-Hänchen effect for surface plasmon polaritons.
abstract: By means of an impedance boundary condition and numerical solution of integral equations for the scattering amplitudes to which its use gives rise, we study as a function of its angle of incidence the reflection of a surface plasmon polariton beam propagating on a metal surface whose dielectric function is ɛ1(ω) when it is incident on a planar interface with a coplanar metal surface whose dielectric function is ɛ2(ω). When the surface of incidence is optically more dense than the surface of scattering, i.e. when |ɛ2(ω)|≫|ɛ1(ω)|, the reflected beam undergoes a lateral displacement whose magnitude is several times the wavelength of the incident beam. This displacement is the surface plasmon polariton analogue of the Goos-Hänchen effect. Since this displacement is sensitive to the dielectric properties of the surface, this effect can be exploited to sense modifications of the dielectric environment of a metal surface, e.g. due to adsorption of atomic or molecular layers on it.
authors.affiliation: Department of Physics and Astronomy and Institute for Surface and Interface Science, University of California, Irvine, CA 92697, USA. felix.huerkamp@uni-muenster.de
authors.forename: Felix
authors.initials: F
authors.lastname: Huerkamp
authors.forename: Tamara A
authors.initials: TA
authors.lastname: Leskova
authors.forename: Alexei A
authors.initials: AA
authors.lastname: Maradudin
authors.forename: Björn
authors.initials: B
authors.lastname: Baumeier
mesh_terms: D000465:Algorithms; D000535:Aluminum / Q000737:chemistry; D003198:Computer Simulation; D004867:Equipment Design; D006046:Gold / Q000737:chemistry; D015233:Models, Statistical; D008962:Models, Theoretical; D055095:Optics and Photonics; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
chemical_list: D006046:Gold; D000535:Aluminum