Nitrogen laser pumped by a pulsed longitudinal electric and inductive discharges

For the first time, a method for the joint excitation of nitrogen by longitudinal electric and inductive discharges was proposed and experimentally implemented. Laser radiation with wavelengths of $\lambda_1$ = 337.1 nm and $\lambda_2$ = 357.7 nm was obtained. The generation energy reached 0.54 mJ at the pulse duration of 20 ns (FWHM) and nitrogen pressure of 6–7 Torr with a uniform intensity distribution in the laser beam cross section. Nitrogen pumping by only a longitudinal discharge in the system with similar parameters resulted in decreasing the lasing energy to 0.39 mJ at the nitrogen pressure not higher than 5 Torr and in worsening the laser beam quality.