For gas lasers a helical resonator with coaxial ring discharge structure is proposed, and the theoretical analysis is given.
提出了一种适用于同轴环形放电结构气体激光器的环形螺旋谐振腔，并给出了理论分析。
2
The ultraviolet copper ion laser with helical hollow cathode has been experimentally investigated. The discharge and laser gain and output characteristics were studied.