Alkali resistant optical coatings for alkali lasers and methods of production thereof
US10570502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2014 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Mar 22, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24975
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In one embodiment, a method for forming an alkali resistant coating includes forming a first oxide material above a substrate and forming a second oxide material above the first oxide material to form a multilayer dielectric coating, wherein the second oxide material is on a side of the multilayer dielectric coating for contacting an alkali. In another embodiment, a method for forming an alkali resistant coating includes forming two or more alternating layers of high and low refractive index oxide materials above a substrate, wherein an innermost layer of the two or more alternating layers is on an alkali-contacting side of the alkali resistant coating, and wherein the innermost layer of the two or more alternating layers comprises at least one of: alumina, zirconia, and hafnia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.