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Abstract

A gas ion laser is described having a resonator structure which not only maintains the optical reflectors of the laser at the respective ends of the optical cavity in a selected relationship, it also maintains an optical element external of such laser in a predetermined relationship to the output beam of the laser. The resonator structure includes a plurality of rods which extend between mounts for the optical reflectors parallel to and adjacent the laser optical cavity. Such rods project beyond the one of the optical cavity mounts selected to hold a partially transmissive optical reflector to define the laser output beam, and terminate in a third mount which maintains a desired optical element in a predetermined relationship relative to the laser output beam.

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First Claim