Graded reflectivity mirror resonators for lasers with a gain medium having a non-circular cross-section
US5260964A · kind A · utility
17Cited by
8References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 26, 1992 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Jun 26, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0818
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A resonator for the modal control of a laser with a gain medium having a non-circular cross-section in a plane perpendicular to the optical axis of the resonator. It has a graded reflectivity mirror as the output coupler. The graded reflectivity mirror consists of a partial reflector which has a reflectivity that varies gradually according to the position on the mirror's surface. The resonator is either astigmatic or the graded reflectivity mirror has a non circularly symmetric reflectivity profile or both. It allows the production of a good optical quality beam with an efficient energy extraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.