Generation properties of new bichromophore coumarin dyes and the influence on them of the structure changes of a coumarin molecule fragment have been studied. New bichromophores allow generation at lamp and laser pumping in a 585-640 nm spectral range, have high generative efficiency (up to 36%) and a high protochemical stability as compared to the best studied and usable coumarins. The influence of pumping frequency content on generation efficiency of new bichromophores has been investigated.
bichromophores, coumarin dyes, laser-transformer, lamp pumping, laser pumping.