Alkali metal quaternary chalcogenides and process for the preparation thereof
US5618471A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1996 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Feb 26, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alkali metal quaternary chalcogenides and process for the preparation. The chalcogenides have the formula A.sub.x B.sub.y C.sub.z D.sub.n containing (CD.sub.4).sup.4- or (C.sub.2 D.sub.6).sup.4- ions where A is selected from the group consisting of an alkali metal and a mixture of alkali metals, B is selected from the group consisting of mercury, zinc and manganese, C is a metal selected from the group consisting of germanium and tin and D is selected from the group consisting of sulfur and selenium, wherein x, y, z and n are molar amounts which provide non-linear optical transmission properties. These chalcogenides are useful as non-linear optical transmission crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.