A Gas Laser

Abstract : The authors introduce a gas laser which contains a cavity and an active element with electrodes and a discharge channel surrounded by a helix, and coupled through the openings of the helix to a cavity which is free of gas discharge. As a distinguishing feature of the patent, the variety of gases which can be used as the active medium is extended, and the power, efficiency and service life of the device are increased by making the spiral which encloses the discharge in the form of inside cooled tubing of the 'coil' type with an outside surface which does not conduct current. (Author)