Multipass fiber amplifiers
US9531149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2014 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Feb 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus and method for multipass fiber amplifier comprises: (a) first passing a laser beam having a first linear polarization in the fiber amplifier in a first direction, (b) rotating the first linear polarization of the laser beam to a second linear polarization, the second linear polarization is perpendicular to the first linear polarization, (c) second passing the laser beam having the second linear polarization in the fiber amplifier in a second direction, the second direction is opposite to the first direction, (d) third passing the laser beam having the second linear polarization in the fiber amplifier in the first direction, the laser beam having the second linear polarization is reflected by a polarization separating device and a mirror, (e) rotating the second linear polarization of the laser beam to the first linear polarization, and (f) fourth passing the laser beam having the first linear polarization in the fiber amplifier in the second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.