Laser resonator having an improved gas-introducing portion
US4672621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1983 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Apr 13, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/073
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a laser resonator having a gas-introducing portion at one end of a laser tube, where the gas introducing portion comprises an inner tube communicating with the laser tube and an outer tube covering the inner tube. The inner tube has a plurality of circumferentially spaced apart flow passages so that a gas mixture fed from a gas source to an annular chamber defined between the inner surface of the outer tube and the outer surface of the inner tube, is led into the inside of the inner tube via the flow passages. As a result, turbulence occurs within the inner tube so that radial distribution of gas flow speed in the laser tube is made uniform, thereby increasing the maximum output and stability. The flow passages may be slits, oval or circular openings, triangular openings or the like. The flow passages may be skewed relative to both the radial and tangential lines passing therethrough or relative to the axis of the inner tube so that the gas introduced inside the inner tube spirals, and therefore the gas travels along the laser tube with a spiral movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.