UV nitrogen laser pumped by a pulsed longitudinal inductive-electric discharge
A.M. Razhev1, D.S. Churkin1,2, R.A. Tkachenko1,2, I.A. Trunov1
1Institute of Laser Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
Keywords: UV nitrogen laser, pulsed inductive discharge, longitudinal electric discharge, lasing energy
Abstract
Electric discharge nitrogen lasers remain popular sources of UV radiation and find many scientific and practical applications. Currently, some of the requirements for commercial nitrogen lasers are small overall dimensions, high pulse-to-pulse stability, and extended service life. In this paper, a nitrogen laser excited by a pulsed longitudinal inductive-electric discharge is suggested as a source which satisfies such criteria. As a result of the experimental studies, lasing at wavelengths l1 = 337.1 and l2 = 357.7 nm was obtained. The generation energy reached 0.67 mJ with a pulse duration of 20 ns (FWHM) and a nitrogen pressure of 7...8 Torr. Pumping nitrogen only with a longitudinal discharge in an experimental setup with similar parameters led to a decrease in the lasing energy to 0.4 mJ (with the same pulse duration of 20 ns) at a nitrogen pressure of no higher than 5 Torr. Nitrogen lasers with these radiation parameters can be used to treat ophthalmic diseases and tuberculosis.
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