Pre-ionizer for a laser
US5337330A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1992 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Oct 9, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0384
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An anode and a cathode in a laser are spaced in a first direction. A voltage difference between these members produces an electrical discharge which ionizes gases in the laser to react chemically and produce coherent radiation. First and second tubes made from a dielectric material are spaced in the laser in a second direction transverse (preferably perpendicular) to the first direction. The anode, the cathode and the tubes extend through the laser in a direction transverse (preferably perpendicular) to the first and second directions. The tubes are preferably at least a 99.9% pure polycrystalline aluminum oxide ceramic with traces of other metallic elements than aluminum. Bushings made from a material homogeneous (preferably identical) to the tube material are integral with the tube near the opposite tube ends. First electrical conductors extend through the tubes. Second electrical conductors (preferably resilient) contact (preferably line contact) the external tube surfaces to define capacitors with the first conductors and the tube material. Positioning members movably engage the tube external surfaces near the tube ends in co-operation with the resilient members establishing th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.