Apparatus and method for initializing an optical-fiber laser for mode locking
US5365531A · kind A · utility
14Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1992 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/06712
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A figure-8 loop laser having a controllable phase shifter in a Sagnac loop (non-linear amplifying loop mirror). A half-wave plate in series with Faraday optical rotators provide a switchable non-reciprocal 180-degree phase shifter that allows the birefringence of the fiber loop to be adjusted during continuous wave operation. The phase shifter is activated during continuous wave operation to find a minimum threshold and then is turned off, placing the laser in optimum state for mode locking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.