Abstract
We have observed laser emission from five SnII transitions (579.9, 645.4, 719.1, 1061, 1074 nm) and four infra-red SnI transitions (1193, 1302, 1346, 1361 nm) in a tin hollow cathode in which the tin vapor was entirely created by discharge sputtering. Laser action occurs in the afterglow stage of the discharge with the exception of the 645.4 nm SnII line which operates in CW mode. The inversion in the afterglow is believed to be created by a recombination and population redistribution mechanism induced by collisions of the tin ions with low energy electrons.
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