Laser on Nitrogen—Electronegative Gas Mixtures,Pumped by Inductive Energy Storage Generator:Experiment and Theoretical Model

摘要

The advantages of inductive energy storage (IES) generators for increasing the pulse energy,power, and duration for nitrogen laser pumped by self-sustained transverse discharge have been exper-imentally demonstrated. A theoretical model is developed and the operation of IES-pumped laser onnitrogen—electronegative gas mixtures is numerically simulated. It is shown experimentally and theo- retically that, adding electronegative gases, one can control the pulse shape of lasing on the C~3П_u—B~3Пgtransition in nitrogen. The increase in the electric field strength in the laser gap in N_2—NF_3and N2—SF6mixtures produced 337.1-nm laser pulses consisting of two spaced peaks and 40-50-ns pulses closeto rectangular. The increase in the laser active volume to 61 (discharge cross section to 6 x10 cm2) inN_2—SF_6mixtures made it possible to obtain the maximum output energy(Q=110 mJ) and UV power(P_(ias), = 6 MW). In N_2—NF_3mixtures, the laser pulse duration was up to ~100 ns with an energy toQ= 30 mJ.