High power three level fiber laser and method of making same
US6031849A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1997 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Nov 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03622
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rare earth doped fiber for use in a fiber laser is presented. The fiber laser uses a single stripe broad area pump diode permits Yb lasing in its 3-level transition at 980 nm preferentially over the 1010 nm 4-level transition. The present fiber laser is characterized by a dual cladding fiber geometry which includes an inner rare earth doped single mode core. There is an inner cladding designed to be a multimode pump core for the pump light. The pump core is followed by a final cladding to confine the pump radiation. The present laser matches the larger/outer mode field to that of a single stripe broad area diode in order to maximize the pump intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.