Method of making an ion laser tube
US4795389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Sep 29, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/032
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ion laser includes a plurality of thin refractory metal disk members with the perimeter of the disks embedded directly into a ceramic plasma tube. A central aperture is formed in the middle of each disk, and a plurality of apertures are formed around the periphery of the disk. In the fabrication process, ceramic powder is compacted to form an outer plasma tube. Two separate tubes, each with electrodes and embedded washer ends, can be formed and fused to form a single tube. The disks (with the surrounding compacted ceramic disposed around the periphery of the disk) are stacked within the plasma tube and the green ensemble of ceramic and metal is fired in only one furnace step with controlled atmosphere. Hermetic cathode and anode electrodes are also formed in the same firing through the plasma tube. Ends are sealed with a mirror-mount of the Brewster window structure, in one embodiment either laser welded or soldered to a refractory metal end disk embedded in the green ceramic at the ends of the tube. The tube can be either air or water cooled. The number of furnace steps and parts necessary for the ion laser is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.