title: Negative Goos-Hänchen shift in periodic media.
abstract: We show that, under certain conditions, a negative Goos-Hänchen shift-a longitudinal displacement of a totally internally reflected wave packet-occurs in periodic media such as waveguide arrays.
authors.affiliation: Department of Physics and Solid State Institute, Technion, Haifa, Israel.
authors.forename: Mikael C
authors.initials: MC
authors.lastname: Rechtsman
authors.forename: Yaroslav V
authors.initials: YV
authors.lastname: Kartashov
authors.forename: Frank
authors.initials: F
authors.lastname: Setzpfandt
authors.forename: Henrike
authors.initials: H
authors.lastname: Trompeter
authors.forename: Lluis
authors.initials: L
authors.lastname: Torner
authors.forename: Thomas
authors.initials: T
authors.lastname: Pertsch
authors.forename: Ulf
authors.initials: U
authors.lastname: Peschel
authors.forename: Alexander
authors.initials: A
authors.lastname: Szameit