Sealed-off RF excited CO.sub.2 lasers and method of manufacturing such lasers
US4393506A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1980 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Nov 17, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0975
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method is disclosed for manufacturing a sealed-off RF excited CO.sub.2 laser with a longer operating life. The invention, which relates to the method and the resulting laser, comprises means for stabilizing the laser gas chemistry otherwise affected by CO.sub.2 dissociation, O.sub.2 consumption, and outgassing of H.sub.2 and H.sub.2 O. More specifically, the aluminum housing of the laser assembly is nickel-plated and then passivated by an oxidation technique using concentrated nitric acid. In addition, novel gettering substances, comprising either a group B metal or cellulose, are employed to adsorb hydrogen and/or water vapor to alleviate the outgassing problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.