Single phase rare earth oxide-aluminum oxide glasses
US6482758B1 · kind B1 · utility
65Cited by
13References
13Claims
0Family size
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Key dates
| Filing date | Oct 4, 2000 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jan 13, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C4/0071
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A bulk single phase glass comprising 23 molar % to 50 molar % rare earth oxides, RE203, and 50 molar % to 77 molar % aluminum oxide, A12O3 is provided. The glass contains at least 50 molar % of Al2O3+RE2O3 and smaller amounts of oxide glass forming agents and other oxides than are found in prior art glasses. The addition of small amounts of lanthanum oxide, La2O3, prevents phase separation. The single phase glass is useful for optical applications such as lasers and optical amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.