Process for making rare earth containing glass
US8304081B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 16, 2007 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Aug 15, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C3/095
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process for making a SiO2—RExOy—Al2O3 glass comprising preparing a glass according to a conventional process wherein the conventional process comprises a step of heat treating a mixture of SiO2, RExOy, and Al2O3 at a temperature greater than the spinodal temperature for 0.1 to 10 hours wherein RExOy is a rare earth oxide and RE is a rare earth element chosen from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and combinations thereof. The invention also relates to glasses prepared by the process and glass lasers, optical amplifiers and laminated glass that comprise the glass prepared by the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.