Role of field losses on the Risken?Nummedal?Graham?Haken laser instability: application to erbium-doped fibre lasers
| Autor: | G. J. de Valcárcel, Fedor Mitschke, Eugenio Roldán |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Quantum optics
Materials science Multi-mode optical fiber Physics and Astronomy (miscellaneous) Field (physics) business.industry General Engineering General Physics and Astronomy chemistry.chemical_element Laser Instability law.invention Erbium Optics chemistry law Optical cavity Fiber laser business |
| Zdroj: | Applied Physics B: Lasers and Optics. 76:741-748 |
| ISSN: | 1432-0649 0946-2171 |
| DOI: | 10.1007/s00340-003-1205-8 |
| Popis: | We analyse the effect of both distributed and localised losses in a laser cavity on the Risken–Nummedal–Graham–Haken multimode instability. For two-level lasers, distributed losses are found to have a negligible influence on the instability conditions as long as they remain below 10 dB, a value hardly ever exceeded under common experimental conditions. If one keeps raising the distributed loss above that value, finally the uniform-field-limit results are recovered: localised loss becomes less and less important, and in the limit does not enter at all. In contrast, for three-level lasers – in particular for erbium-doped fibre lasers – distributed losses are found to have a profound quantitative influence on the instability threshold. |
| Databáze: | OpenAIRE |
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