Holographic Method of Amp!itude-phase Correction of Laser Beams
Soskin M.S. , Bondarenko M.D., Gnatovskii A.V.
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