title: Demonstration of the echo-enabled harmonic generation technique for short-wavelength seeded free electron lasers.
abstract: We report the first experimental demonstration of the echo-enabled harmonic generation technique, which holds great promise for generation of high-power, fully coherent short-wavelength radiation. In this experiment, coherent radiation at the 3rd and 4th harmonics of the second seed laser is generated from the so-called beam echo effect. The experiment confirms the physics behind this technique and paves the way for applying the echo-enabled harmonic generation technique for seeded x-ray free electron lasers.
authors.affiliation: SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors.forename: D
authors.initials: D
authors.lastname: Xiang
authors.forename: E
authors.initials: E
authors.lastname: Colby
authors.forename: M
authors.initials: M
authors.lastname: Dunning
authors.forename: S
authors.initials: S
authors.lastname: Gilevich
authors.forename: C
authors.initials: C
authors.lastname: Hast
authors.forename: K
authors.initials: K
authors.lastname: Jobe
authors.forename: D
authors.initials: D
authors.lastname: McCormick
authors.forename: J
authors.initials: J
authors.lastname: Nelson
authors.forename: T O
authors.initials: TO
authors.lastname: Raubenheimer
authors.forename: K
authors.initials: K
authors.lastname: Soong
authors.forename: G
authors.initials: G
authors.lastname: Stupakov
authors.forename: Z
authors.initials: Z
authors.lastname: Szalata
authors.forename: D
authors.initials: D
authors.lastname: Walz
authors.forename: S
authors.initials: S
authors.lastname: Weathersby
authors.forename: M
authors.initials: M
authors.lastname: Woodley
authors.forename: P-L
authors.initials: PL
authors.lastname: Pernet