The laser performance of coumarin 440 (C440) and coumarin 460 (C460) mixture is studied. The mixture dyes demonstrated broader and more efficient tuning curves compared with those of coumarin 440 and coumarin 460. A wide tuning range from 421 nm to 482 nm is achieved. The highest conversion efficiency of 12.2% is obtained at 453 nm. Comparing with the efficiencies of individual dye C440 and C460, which are ∼5%, the tuning range and the conversion efficiency of the coumarin 440 (C440) and coumarin 460 (C460) mixture are the best under the same condition so far. All our results indicate that high laser performance can be achieved using the co-doped laser dyes of coumarin 440 and coumarin 460.

研究了香豆素440（C440）和香豆素460（C460）混合物的激光性能。与香豆素440和香豆素460相比，混合染料显示出更宽和更有效的调谐曲线。可实现从421 nm到482 nm的宽调谐范围。在453 nm处可获得最高的12.2％的转换效率。与单个染料C440和C460的效率（约为5％）相比，香豆素440（C440）和香豆素460（C460）混合物的调谐范围和转化效率在相同条件下到目前为止是最好的。我们所有的结果表明，使用香豆素440和香豆素460的共掺杂激光染料可以实现高激光性能。