Control of parameters of solid-state industrial YAG:Nd3+ laser radiation using methods of adaptive optics. III. Reduction of divergence and formation of mode structures

A reduction in the divergence of a laser beam by a factor of 2–2.5 was achieved in a multimode lasing regime using an intracavity controlled mirror. It is shown that various radiation mode structures may be formed at the laser output and in the far-field zone.