| 摘要 |
Disclosed is a substantially transparent glass-ceramic ceramic, and a method for making a glass-ceramic, exhibiting a ZnO crystal phase and having a glass-ceramic composition that lies within the SiO2-Al2O3-ZnO-K2O-Ga2O3-Na2O system and particularly consisting essentially, in weight percent on an oxide basis, of 25-50% SiO2, 15-45% ZnO, 0-26% Al2O3, 0-25% K2O, 0-10% Na2O, 0-32% Ga2O3, a K2O + Na2O amount of greater than 10%, a Al2O3+ Ga2O3 of greater than 10%, the glass ceramic microstructure containing a crystal phase comprising at least 15%, by weight, of hexagonal ZnO crystals. Another aspect disclosed is optical element selected from the group consisting of an optical fiber, a gain or laser medium, and an amplifier component, a saturable absorber, with the element comprising a transparent glass-ceramic of the same composition and containing a crystallinity of at least about 15% by weight of hexagonal ZnO crystals. |
