The optical basicities of some oxides have been calculated on the basis of Sanderson’ s partial charge. The results seem rather reasonable. The method also applies to the oxides of subgroup elements.
The f→f electronic emission of Eu<sup>2+</sup> with configuration of 4f<sup>7</sup> can bring about laser generation. Some of Eu<sup>2+</sup>-activated crystals which can produce s...The f→f electronic emission of Eu<sup>2+</sup> with configuration of 4f<sup>7</sup> can bring about laser generation. Some of Eu<sup>2+</sup>-activated crystals which can produce sharp line emission, are candidates for visible solid-state laser at shorter wavelengths because their threshold is low and accumulated energy high.展开更多
文摘The optical basicities of some oxides have been calculated on the basis of Sanderson’ s partial charge. The results seem rather reasonable. The method also applies to the oxides of subgroup elements.
基金Project supported by the National Natural Science Foundation of China.
文摘The f→f electronic emission of Eu<sup>2+</sup> with configuration of 4f<sup>7</sup> can bring about laser generation. Some of Eu<sup>2+</sup>-activated crystals which can produce sharp line emission, are candidates for visible solid-state laser at shorter wavelengths because their threshold is low and accumulated energy high.
