title: Intensity limits for propagation of 0.527 microm laser beams through large-scale-length plasmas for inertial confinement fusion.
abstract: We have established the intensity limits for propagation of a frequency-doubled (2omega, 527 nm) high intensity interaction beam through an underdense large-scale-length plasma. We observe good beam transmission at laser intensities at or below 2x10(14) W/cm(2) and a strong reduction at intensities up to 10(15) W/cm(2) due to the onset of parametric scattering instabilities. We show that temporal beam smoothing by spectral dispersion allows a factor of 2 higher intensities while keeping the beam spray constant, which establishes frequency-doubled light as an option for ignition and burn in inertial confinement fusion experiments.
authors.affiliation: Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550, USA.
authors.forename: C
authors.initials: C
authors.lastname: Niemann
authors.forename: L
authors.initials: L
authors.lastname: Divol
authors.forename: D H
authors.initials: DH
authors.lastname: Froula
authors.forename: G
authors.initials: G
authors.lastname: Gregori
authors.forename: O
authors.initials: O
authors.lastname: Jones
authors.forename: R K
authors.initials: RK
authors.lastname: Kirkwood
authors.forename: A J
authors.initials: AJ
authors.lastname: Mackinnon
authors.forename: N B
authors.initials: NB
authors.lastname: Meezan
authors.forename: J D
authors.initials: JD
authors.lastname: Moody
authors.forename: C
authors.initials: C
authors.lastname: Sorce
authors.forename: L J
authors.initials: LJ
authors.lastname: Suter
authors.forename: R
authors.initials: R
authors.lastname: Bahr
authors.forename: W
authors.initials: W
authors.lastname: Seka
authors.forename: S H
authors.initials: SH
authors.lastname: Glenzer