title: Broadband terahertz emission through exciton trapping in a semiconductor quantum well.
abstract: Exciton trapping in a dc-biased quantum well is shown to result in the emission of broadband terahertz transients. The transients are free from bandwidth limitations, very intense, and quite distinctive.
authors.forename: S
authors.initials: S
authors.lastname: Hughes
authors.forename: D S
authors.initials: DS
authors.lastname: Citrin