Using condensed chemicals to precondition lithium niobate and lithium tantalate crystals
US7153487B2 · kind B2 · utility
2Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2004 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jan 17, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S117/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods and apparatus for preconditioning a lithium niobate or lithium tantalate crystal. At least a portion of a surface of the crystal is covered with a condensed material including one or more active chemicals. The crystal is heated in a non-oxidizing environment above an activating temperature at which the active chemicals contribute to reducing the crystal beneath the covered surface portion. The crystal is cooled from above the activating temperature to below a quenching temperature at which the active chemicals become essentially inactive for reducing the crystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.