V.V.Vasilcov, A.M.Zabelin, E.V.Zelenov, V.Ya.Panchenko, A.P.Roshin, A.N.Safonov.

The proposed invention falls into field of laser equipment, exactly to the heads of multichannel lasers. Problems of the proposed invention are: pinch of compactness, reliability and safety, and also expansion of technological opportunities and improvement of beam quality. The indicated problems are fulfill because of that the housing has the cylindrical shape and is made from an insulating material, the gas-discharge tubes in the pack are located, in one range, in diagonal plane of housing, on identical distance from each other. Separators are fastened by longitudinal fastening tubes made from the same material, as gas-discharge tubes, and form on both sides of the gas-discharge tubes pack two symmetric closed circuits, which exterior branches form a cylindrical surface concentric to a housing, and the interior branches are located in planes, parallel plane of gas-discharge tubes pack. For course of cooling liquid the windows in separators are located inside one of contours, formed by fastening tubes. Inside of fastening tubes are fused two longitudinal busbars for leading of high heteropolar voltage, connected with separators and leaded out from the housing. The tightening rods of the optical resonator are located outside of the housing, and the hermetic cavity for course of cooling liquid is formed by interior walls of the housing and outside walls of tubes. The head of the multichannel laser can be made in version, in which the optical resonator consists of a forward output mirror, located near an output end of a central gas-discharge tube perpendicularly its axis, two rotary prisms, which mirrors are located near ends of other gas-discharge tubes under a corner 45⁰ to their axes and under a corner 90⁰ to each other, while the plane of a prism corner bisector on the side of forward output mirror is combined with a plane of symmetry of the gas-discharge tubes disposition in a pack, and the plane of an opposite prism corner bisector in parallel displaced on distance equal to half of distance between gas-discharge tubes. Back close mirror is located near a displaced rotary prism on the side of its displacement in parallel of an axis of a pack and provides beam through a rotary prism to an opposite extreme gas-discharge tube, that provides sequential passing around of radiation through all gas-discharge tubes from extreme to central, and after forward output window the telescopic system for aperture radiation magnification is lo