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VOLUME 14 (1971) | ISSUE 1 | PAGE 27
Holographic Method of Amp!itude-phase Correction of Laser Beams
One of the main problems of quantum electronics is to obtain a maximal axial brightness of stimulated emission, for which purpose it is necessary to use a nearly-plane wave front and homogeneous amplitude distribution over the cross section of the beam. As is well-known, this requirement is approximately satisfied only by the lowest transverse mode TEMnn, but it occupies the minimum