title: Terahertz emission via ultrashort-pulse excitation of magnetic metal films.
abstract: We observe terahertz emission by optical rectification of an intense 1.5-eV, 50-fs pulse in single-crystal iron thin films grown by molecular beam epitaxy. The azimuthal dependence of the emission indicates the presence of a magnetic nonlinearity and a nonmagnetic surface nonlinearity.
authors.affiliation: MST-10, DX-2, and NMT-16, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. dhilton@lanl.gov
authors.forename: D J
authors.initials: DJ
authors.lastname: Hilton
authors.forename: R D
authors.initials: RD
authors.lastname: Averitt
authors.forename: C A
authors.initials: CA
authors.lastname: Meserole
authors.forename: G L
authors.initials: GL
authors.lastname: Fisher
authors.forename: D J
authors.initials: DJ
authors.lastname: Funk
authors.forename: J D
authors.initials: JD
authors.lastname: Thompson
authors.forename: A J
authors.initials: AJ
authors.lastname: Taylor