75 W 40% efficiency single-mode all-fiber erbium-doped laser cladding pumped at 976 nm.
75 W 40% efficiency single-mode all-fiber erbium-doped laser cladding pumped at 976 nm.
复制标题
75%20W%2040%%20效率%20单模%20全光纤%20掺铒%20激光%20包层%20泵浦%20at%20976%20nm。
作者：
L. Kotov;M. Likhachev;M. Bubnov;O. Medvedkov;M. Yashkov;A. Guryanov;J. Lhermite;S. Février;Eric Cormier
本信件对用于 976 nm 泵浦激光器和放大器包层的无镱掺铒光纤进行了优化。单模光纤设计包括增加的 34 μm 纤芯直径以及正确选择的铒和共掺杂剂浓度。我们展示了基于该光纤的全光纤高功率激光器和功率放大器，其斜率效率达到创纪录的 40%。据我们所知，所达到的 75 W 输出功率是此类激光器报道的最高功率。
Optimization of Yb-free Er-doped fiber for lasers and amplifiers cladding pumped at 976 nm was performed in this Letter. The single-mode fiber design includes an increased core diameter of 34 μm and properly chosen erbium and co-dopant concentrations. We demonstrate an all-fiber high power laser and power amplifier based on this fiber with the record slope efficiency of 40%. To the best of our knowledge, the achieved output power of 75 W is the highest power reported for such lasers.