Inserting an array of nearly 100 similar lenses into a common focal system, the uniformity of the illumination of a target can evidently be improved without being affected by the near-field distribution of laser beams. We report here geometrical- and physical-optics analyses of the lens array and compare them with the experimental results.
The field structures in the overdense region of an inhomogeneous magnetized plasma are studied.It is indicated that owing to the mutual conversions between the extraordinary electromagnetic wave and the electron plasma wave, the electromagnetic wave will regenerate in the overdense plasma.
The field structures in the overdense region above the resonant paint of an inhomogeneous magnetized plasma are studied. Our work indicates that owing to the mutual conversion be-tween the extraordinary electromagnetic wave and the longitudinal plasma wave, the electromagnetic wave will grow again in the overdense plasma.
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