title: Nonperturbative analysis of cross coupling in corrugated metal films.
abstract: There has been a recent renewal of interest in anomalously high energy transfer through otherwise opaque metal film geometries. One of the earliest such systems, that of surface plasmon cross coupling in a sinusoidally corrugated continuous metal film, was studied by Gruhlke et al. [Phys. Rev. Lett. 56, 2838 (1986)]. We show that it is possible to use a nonperturbative method to accurately predict this coupling, and we use this method to analyze both intrinsic coupling in symmetric structures and grating-assisted cross coupling in asymmetric structures.
authors.affiliation: The Institute of Optics, University of Rochester, New York 14627, USA.
authors.forename: Z
authors.initials: Z
authors.lastname: Zhu
authors.forename: T G
authors.initials: TG
authors.lastname: Brown