The effect of universal intermolecular interactions on the luminescence and laser generation of coumarine 1 is investigated in different solvents. It is shown that solutions of coumarine 1 in polar solvents, in which the orientational intermolecular relaxation leads to a disposition of the energy levels of the molecules of the dye, which is favorable for generation, and to a reduction in the threshold of generation as compared to the threshold in nonpolar solvents, have the greatest effectiveness of generation.
Department of Chemical Kinetics of the Chemistry Faculty, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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