Kifle Esrom, Starecki Florent, Loiko Pavel, Cozic Solenn, Joulain Franck, Berthelot Thibaud, Georges Thierry, Stojcevski Dragan, Deubel Damien, Camy Patrice
Opt Lett. 2021 Jan 1;46(1):74-77. doi: 10.1364/OL.413673.
We report on a red praseodymium fiber laser delivering 1.07 W at 634.5 nm with a slope efficiency of 20.7% (versus the incident pump), a laser threshold of 0.55 W, and a single-mode output (,2<1.1) in the quasi-continuous-wave regime. It is based on a 0.6 mol.% -doped ZBLAN double-clad fiber with a 5.5 µm core, a double D-shaped (diameters, 115/125 µm) inner cladding, and a length of 5.0 m. The fiber is pumped by a multimode 443 nm GaN diode. The laser design is optimized using a numerical model. The proposed concept is suitable for the development of diode-pumped high brightness watt-level visible praseodymium fiber lasers.
我们报道了一种红色镨光纤激光器，在634.5nm波长处输出功率为1.07W，斜率效率为20.7%（相对于入射泵浦光），激光阈值为0.55W，在准连续波模式下输出单模（<1.1）。它基于一根0.6mol.%掺杂的ZBLAN双包层光纤，纤芯直径为5.5μm，内包层为双D形（直径115/125μm），长度为5.0m。该光纤由多模443nm GaN二极管泵浦。通过数值模型对激光器设计进行了优化。所提出的概念适用于开发二极管泵浦的高亮度瓦级可见镨光纤激光器。
