Holmium-doped optical fibers for efficient fiber lasers

被引：2
|
作者：
Kamradek, M. [1 ,2 ]
Kasik, I [1 ]
Aubrecht, J. [1 ]
Mrazek, J. [1 ]
Podrazky, O. [1 ]
Cajzl, J. [1 ,3 ]
Varak, P. [1 ,3 ]
Kubecek, V [2 ]
Peterka, P. [1 ]
Honzatko, P. [1 ]
机构：
[1] CAS, Inst Photon & Elect, Chaberska 57, Prague 18251 8, Czech Republic
[2] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Brehova 7, Prague 11519 1, Czech Republic
[3] Univ Chem & Technol Prague, Tech 5, Prague 16628, Czech Republic
来源：
MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES VI | 2020年 / 11355卷
关键词：
holmium; doped optical fibers; fiber lasers; NANOPARTICLES;
D O I：
10.1117/12.2559176
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Holmium-doped silica-based optical fibers belong to intensively studied materials for fiber laser sources operating around 2.1 mu m. In this contribution, we deal with silica -based optical fibers doped with holmium and aluminum oxide. The fibers were prepared by the modified chemical vapor deposition method combined either with a solution doping or a nanoparticle doping. A large set of fibers with various dopant concentrations was characterized related to their fluorescence lifetime, laser threshold and slope efficiency. The best -performance fibers exhibited a fluorescence lifetime longer than 1 ms, a laser threshold under 200 mW and a slope efficiency around 80%. These characteristics are discussed regarding the doping method and dopant concentrations.
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页数：7
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