http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H11501770-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-1312 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-06754 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-0675 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-1608 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-1618 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-094096 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-067 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-094 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-131 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-067 |
| filingDate | 1996-03-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1999-02-09^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H11501770-A |
| titleOfInvention | Dual wavelength pump low noise fiber laser |
| abstract | SUMMARY A dual wavelength pumped low noise fiber laser has a fiber laser having a pair of Bragg gratings (14, 16) at opposite ends of a fiber laser cavity (18). The fiber laser cavity (18) is co-doped with two kinds of rare earth dopants Er +3 Yb +3 so that laser oscillation occurs at a laser oscillation wavelength λ L. The first pump signal (20) efficiently excites Yb to an excited state, and the energy of the Yb moves to Er atoms to perform final laser oscillation at a desired laser oscillation frequency. Since Yb is excited very efficiently, a high absorption rate is achieved and a high laser output power is obtained, resulting in a reduction in RIN. At the same time, the second pump signal (52) directly excites Er at a different wavelength λ P2 , distributing the lasing transition more quickly, and providing closed loop control of the second pump signal (52). By giving a sufficient bandwidth to this, a low-frequency RIN spike caused by relaxation oscillation inside the laser is controlled. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6411432-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009253075-A |
| priorityDate | 1995-03-06^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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