1 Two-Dimensional
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چکیده
LLE Review, Volume 69 1 The ultimate goal of the LLE uniformity program is to reduce the rms laser-irradiation nonuniformity to the 1%–2% level, which is required for cryogenic implosion experiments on OMEGA. The combination of distributed phase plates (DPP’s), two-dimensional (2-D) smoothing by spectral dispersion (SSD), polarization wedges, and beam overlap should be sufficient to reach this goal. We present here a discussion of the mathematical formalism of 2-D SSD with numerical calculations illustrating the levels of uniformity that can be achieved on OMEGA. The initial implementation of 2-D SSD is described, and the initial experimental results for uniformity are compared with theory.
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