Non - selfsustained longitudinal discharge co2 laser employing helical transverse - pulsed preionization technology is investigated for the first time . the main discharge and output power are well controlled by the pre - ionization pulser 采用螺旋结构横向脉冲预电离技术首次研究了非自持纵向放电co _ 2激光器,非自持激光器的主放电和输出功率由外加的预电离脉冲控制,激光器的可控性非常好。