| 简介 |
An optical article having a rare earth doped, fluorinated aluminosilicate glass core composition consisting essentially, in mole %, of : SiO20-90; GeO20-90; Na 2O 0-25; Li2O 0-10; K2O 0-25; Rb2O 0-25; Cs2O 0-25; Al2O35-40; Ga2O35-40; RE2(1)O30- 40; RE2(2)O30-1; Er 2O30.001-5; Yb2O30-5; PbO 0-15; RO 0-20; ZnO 0-10; ZrO 20-2; TiO20-2; Nb2O50-10; Ta2O50-10; P2O50-5; B2 O30-15; As2O3 0-10; Sb2O30-20; Na2Cl20-10; Bi2O 30-5, and up to 15 weight % fluorine in the form of at least one of a fluorinated component of the glass composition and a batch constituent selected from a group consisting of at least one of AlF 3, REF3, NH5F 2, NaF, Na2SiF6, Na3AlF6. |
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