Laser and an amplifier
US5383197A · kind A · utility
2Cited by
0References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1993 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | Apr 30, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/173
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An 850 nm laser and/or amplifier comprises a single mode fluoro-zirconate optical fibre (20) doped with Er.sup.3+. CW operation of the normally self-terminating lasing transition .sup.4 S.sub.3/2 to .sup.4 I.sub.13/2 is achieved by applying excitation energy at 801 nm which both maintains a population inversion between the lasing levels and also populates the upper lasing level by a two-stage process of excitation to the .sup.4 I.sub.9/12 level from the .sup.4 I.sub.15/2 ground state and then to .sup.2 H.sub.9/2 level by ESA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.