Bismuth and magnesium co-doped lithium niobate crystal, preparation method thereof and application thereof
US10036102B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 7, 2016 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Jan 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A bismuth and magnesium co-doped lithium niobate crystal includes Li2CO3, Nb2O5, Bi2O3 and MgO, wherein the molar ratio of [Li] and [Nb] is 0.90-1.00, the molar percentage of Bi2O3 in the mixture is 0.25-0.80%, and the molar percentage of MgO in the mixture is 3.0-7.0%. The bismuth and magnesium co-doped lithium niobate crystal has enhanced photorefraction, improved photorefractive sensitivity, shortened holographic grating saturation writing time, and the photorefractive diffraction efficiency can reach up to 17%. The response time is only 170 ms, when the holographic storage experiment is carried out using 488 nm continuous laser. Therefore, this crystal can be used in the field of holographic imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.