title: Monoenergetic electronic beam production using dual collinear laser pulses.
abstract: The production of monoenergetic electron beams by two copropagating ultrashort laser pulses is investigated both by experiment and using particle-in-cell simulations. By proper timing between guiding and driver pulses, a high-amplitude plasma wave is generated and sustained for longer than is possible with either of the laser pulses individually, due to plasma waveguiding of the driver by the guiding pulse. The growth of the plasma wave is inferred by the measurement of monoenergetic electron beams with low divergence that are not measured by using either of the pulses individually. This scheme can be easily implemented and may allow more control of the interaction than is available to the single pulse scheme.
authors.affiliation: Blackett Laboratory, Imperial College London SW7 2BZ, United Kingdom.
authors.forename: A G R
authors.initials: AG
authors.lastname: Thomas
authors.forename: C D
authors.initials: CD
authors.lastname: Murphy
authors.forename: S P D
authors.initials: SP
authors.lastname: Mangles
authors.forename: A E
authors.initials: AE
authors.lastname: Dangor
authors.forename: P
authors.initials: P
authors.lastname: Foster
authors.forename: J G
authors.initials: JG
authors.lastname: Gallacher
authors.forename: D A
authors.initials: DA
authors.lastname: Jaroszynski
authors.forename: C
authors.initials: C
authors.lastname: Kamperidis
authors.forename: K L
authors.initials: KL
authors.lastname: Lancaster
authors.forename: P A
authors.initials: PA
authors.lastname: Norreys
authors.forename: R
authors.initials: R
authors.lastname: Viskup
authors.forename: K
authors.initials: K
authors.lastname: Krushelnick
authors.forename: Z
authors.initials: Z
authors.lastname: Najmudin