Abstract
Pulsed lasing was obtained for the first time from Li2 molecules by optical pumping with radiation from a pulsed copper vapor laser (578.2 nm, pulse repetition frequency 5 kHz). The laser transitions, with wavelengths in the range 867–907 nm, belong to the electronic A1Σu+–X1Σg+ system. With a pump power of 190 mW, an average output power of 8 mW was achieved with an efficiency for the conversion of the optical pumping energy of 7%. A number of Li2 laser emission lines were observed in the superradiant regime.
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