Abstract
In order to obtain effective pumping of the UV N2laser, a newly modified Blumlein circuit named Two-stage Blumlein (TB) has been proposed; after the circuit analysis, we designed the TB circuit. Compared with the conventional Blumlein circuit, the TB gives a faster rising discharge current, though it needs an additional set of a spark gap and a charging capacitor; by the use of a 25 cm in length laser tube, the output energy by the TB has been about twice as large as the conventional one.