Synthetic laser medium
US4824598A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Oct 20, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/28
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laser medium is particularly useful in high average power solid state lasers. The laser medium includes a chormium dopant and preferably neodymium ions as codopant, and is primarily a gadolinium scandium gallium garnet, or an analog thereof. Divalent cations inhibit spiral morphology as large boules from which the laser medium is derived are grown, and a source of ions convertible between a trivalent state and a tetravalent state at a low ionization energy are in the laser medium to reduce an absorption coefficient at about one micron wavelength otherwise caused by the divalent cations. These divalent cations and convertible ions are dispersed in the laser medium. Preferred convertible ions are provided from titanium or cerium sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.