Performance of smoothing by spectral dispersion (SSD) with frequency conversion on the beamlet laser for the National Ignition Facility

Summary form only given. Inertial confinement fusion (ICF) utilizing direct or indirect laser drive requires the target illumination to be uniform over a wide range of spatial frequencies. A number of approaches have been suggested to achieve the desired level of illumination uniformity; angular dispersion of phase-modulated (FM) light (termed smoothing by spectral dispersion or SSD) is attractive for ICF using glass lasers, since pure phase modulation preserves the uniform intensity profiles necessary for high power laser amplification.