Assignment of the 7Li2 optically pumped laser transitions pumped by Ar+ and Kr+ laser lines

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Abstract
In an attempt to determine the assignments for the wavelengths observed in the line tunable lithium dimer laser [H. Welling and B. Wellegehausen, Laser Spectroscopy III (Springer‐Verlag, New York, 1977), p. 365] pumped by the Kr+ 6471‐Å laser, we have examined the corresponding fluorescence spectrum of the 7Li2 molecules. Unlike the Ar+ laser fluorescences which have previously been assigned, the Kr+ laser fluorescence of Li2 has not been previously studied. Here we present the assigned fluorescence spectrum which consists of two series of the A‐X system (v′ = 9, J′ = 11, v′ = 12, J′ = 60) along with the line frequencies and their calculated absolute radiative transition probabilities. The optically‐pumped laser lines are identified and additional wavelengths are listed which may lase when pumped at 6471 Å or at various Ar+ laser wavelengths.

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