Intensity limits for propagation of 0.527 microm laser beams through large-scale-length plasmas for inertial confinement fusion.

Intensity limits for propagation of 0.527 microm laser beams through large-scale-length plasmas for inertial confinement fusion.

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...

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Bibliographic Details
Main Authors: Niemann, C, Divol, L, Froula, D, Gregori, G, Jones, O, Kirkwood, R, Mackinnon, A, Meezan, N, Moody, J, Sorce, C, Suter, L, Bahr, R, Seka, W, Glenzer, S
Format: Journal article
Language:English
Published: 2005
Description
Summary: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.

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