| Autor: |
Zhilun Zhang, Xianfeng Lin, Gui Chen, Lei Liao, Yingbin Xing, Haiqing Li, Jinggang Peng, Nengli Dai, Jinyan Li |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
IEEE Photonics Journal, Vol 13, Iss 4, Pp 1-6 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1943-0655 |
| DOI: |
10.1109/JPHOT.2021.3096716 |
| Popis: |
The remarkable evolution of ytterbium-doped fiber (YDF) lasers and amplifiers is interrupted by a limiting thermo-optical effect called transverse mode instability (TMI). Hereon, we propose a Gaussian-shaped gain-dopant distributed (GSGDD) YDF, which is fabricated by a modified chemical vapor deposition (MCVD) process combined with solution doping technique (SDT). By regulating the solution concentrations of soot layers, the content of Yb3+ ions presents Gaussian-shaped distribution in the transverse direction while the refractive index profile (RIP) exhibits a stepped profile. The laser performance of this fiber is verified by a bidirectional pumped master oscillator power amplifier (MOPA). Over 3 kW near-single-mode laser output is obtained with the slope efficiency of 84.9%. At the highest power output, there are no Stokes light components in the spectrum and the beam quality M2 factor is ∼1.45 These results suggest that the GSGDD fiber owns great potential to achieve high power output with excellent beam quality. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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