
523TheHigh-EnergyPetawattLaserPHELIXandItsHigh-PowerOptics
Chapter 19
errors. Figure19.11depicts the model predictions of a 3D full beam calculation for a
25mm thick DKDP crystal, assuming a spatial beam modulation of 70% and a phase
modulation corresponding to ±100 μrad local beam tilt external to the crystal. Figure
19.12shows the alignment tolerances of the crystal. e DKDP crystal of PHELIX was
manufactured by Gooch and Housego, Cleveland Crystals, Cleveland, OH, USA. e
LDT exceeds 7 J/cm² at 1054nm and 3 J/cm² at 527nm for 1.5 ns pulses. e transmit-
ted wavefront distortion of the mounted DKDP for the central 285mm aperture is 0. ...