Gas laser oscillator
US6331995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2001 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/097
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A gas laser oscillator having at least three discharge tubes disposed along the optical axis, and a spacer having an opening centered on the optical axis. The spacer is disposed between a partially reflective mirror and the closest discharge tube. Further, the discharge tubes are disposed in series along the optical axis, and satisfy the following three formulas simultaneously: EQU r1/r2>1.0 Formula 1 EQU L2/(L1+L2)<0.85 Formula 2 EQU r3/r2<1.4 Formula 3 where the sum of lengths of a pair of discharge tubes disposed at both ends in optical axis direction is L1, the inside diameter of these discharge tubes is r1, the sum of lengths of the other discharge tubes in the optical axis direction is L2, the inside diameter of these discharge tubes is r2, and the inside diameter of the opening of the spacer is r3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.