Neon laser with wavelengths of 540.1 and 614.3 nm pumped by an inductive pulsed cylindrical discharge
A.M. Razhev1, D.S. Churkin1,2, I.A. Trunov1, R.A. Tkachenko1,2
1Institute of Laser Physics SB RAS, Novosibirsk, Russia
2National Research Novosibirsk State University, Novosibirsk, Russia
Keywords: inductive pulsed cylindrical discharge, NeI laser, laser beam shape, amplified spontaneous emission
Abstract
Results of the study of features of the spectral, temporal, and spatial characteristics of the radiation from neutral neon atoms pumped by an inductive pulsed cylindrical discharge are presented. Lasing was obtained at wavelengths of 540.1 and 614.3 nm with optical pulse duration at levels of 13 ± 1 and 5 ± 1 ns (FWHM), respectively. The cross section of the laser radiation had the shape of a ring with a diameter of 33.1 ± 0.1 mm and a width of 5.6 ± 0.1 mm. The intensity distribution of the lasing ring was nonuniform and has a grain structure, typical of lasers operating in the amplified spontaneous emission mode. The grain region is inhomogeneous in form and size and shows a pronounced radial symmetry, which, according to our assumption, is due to the nature of the electric field in an inductive cylindrical discharge.
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