Back to Search
Start Over
Modeling rare-earth doped microfiber ring lasers
- Source :
- Optics express. 14(16)
- Publication Year :
- 2009
-
Abstract
- We propose a compact laser configuration based on resonating both the pump and signal light along a microfiber ring doped with active ions. We estimate the minimum Q-factor to obtain lasing and find that values already demonstrated in passive microfiber rings will be sufficient. We model the performance of this device in steady state using rate equations and show that pump resonance can significantly reduce the threshold and increase the quantum efficiency, especially for rings made of materials with weak active ion absorption. Numerical examples for erbium and ytterbium doped devices are presented. Taking into account scattering and coupling losses the optimum pump coupling factor is calculated. The dependences of the quantum efficiency and threshold power on the coupling losses are also investigated. We predict that efficient ytterbium-doped lasers can be obtained with a ring diameter down to a few tens of micrometers.
- Subjects :
- Ytterbium
business.product_category
Materials science
Physics::Optics
chemistry.chemical_element
Lasers, Solid-State
law.invention
Erbium
Optics
law
Fiber laser
Microfiber
Fiber Optic Technology
Lenses
Coupling
business.industry
Signal Processing, Computer-Assisted
Equipment Design
Models, Theoretical
Laser
Atomic and Molecular Physics, and Optics
Refractometry
chemistry
Quantum efficiency
business
Lasing threshold
Subjects
Details
- ISSN :
- 10944087
- Volume :
- 14
- Issue :
- 16
- Database :
- OpenAIRE
- Journal :
- Optics express
- Accession number :
- edsair.doi.dedup.....61dc6ee441fe4cbec6e51a346a003c4a