title: Strongly dispersive transient Bragg grating for high harmonics.
abstract: We create a transient Bragg grating in a high-harmonic generation medium using two counterpropagating pulses. The Bragg grating disperses the harmonics in angle and can diffract a large bandwidth with temporal resolution limited only by the source size.
authors.affiliation: Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Farrell
authors.forename: L S
authors.initials: LS
authors.lastname: Spector
authors.forename: M B
authors.initials: MB
authors.lastname: Gaarde
authors.forename: B K
authors.initials: BK
authors.lastname: McFarland
authors.forename: P H
authors.initials: PH
authors.lastname: Bucksbaum
authors.forename: M
authors.initials: M
authors.lastname: Gühr