Abstract

In this letter we demonstrate the enhancement of a fluorescence series by simultaneous pumping of a second coupled series at the same frequency. Using a Kr + laser (568.2 nm) and 7Li 2 molecules, we have observed four fluorescence series and enhanced emission from B 1 Π u ( v′ = 9, J′ = 25). This enhancement results from the coupling of an A-X series and a B-X series through the level X 1 σ + g ( v″ = 16, J″ = 25). This level is populated primarily through the A-X fluorescence and at the same time is the lower level for the excitation of the B-X series.

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