title: Large-amplitude plasma wave generation with a high-intensity short-pulse beat wave.
abstract: A short-pulse laser beat wave scheme for advanced particle accelerator applications is examined. A short, intense (3-ps, >10(18)-W cm(-2)) two-frequency laser pulse is produced by use of a modified chirped-pulse amplification scheme and is shown to produce relativistic plasma waves during interactions with low-density plasmas. The generation of plasma waves was observed by measurement of forward Raman scattering. Resonance was found to occur at an electron density many times that expected, owing to ponderomotive displacement of plasma within the focal region.
authors.forename: B
authors.initials: B
authors.lastname: Walton
authors.forename: Z
authors.initials: Z
authors.lastname: Najmudin
authors.forename: M S
authors.initials: MS
authors.lastname: Wei
authors.forename: C
authors.initials: C
authors.lastname: Marle
authors.forename: R J
authors.initials: RJ
authors.lastname: Kingham
authors.forename: K
authors.initials: K
authors.lastname: Krushelnick
authors.forename: A E
authors.initials: AE
authors.lastname: Dangor
authors.forename: R J
authors.initials: RJ
authors.lastname: Clarke
authors.forename: M J
authors.initials: MJ
authors.lastname: Poulter
authors.forename: C
authors.initials: C
authors.lastname: Hernandez-Gomez
authors.forename: S
authors.initials: S
authors.lastname: Hawkes
authors.forename: D
authors.initials: D
authors.lastname: Neely
authors.forename: J L
authors.initials: JL
authors.lastname: Collier
authors.forename: C N
authors.initials: CN
authors.lastname: Danson
authors.forename: S
authors.initials: S
authors.lastname: Fritzler
authors.forename: V
authors.initials: V
authors.lastname: Malka