| 摘要 |
A family of alkali-tungsten-tellurite glasses that consist essentially of, a s calculated in mole percent, 10-90 % TeO2, at least 5 % WO3 and at least 0.5 % R2O where R is Li, Na, K, Cs, Tl and mixtures, that may contain a lanthanide oxide as a dopant, in particular erbium oxide, and that, when so doped, is characterized by a fluorescent emission spectrum having a relatively broad FWHM value.
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