Ren Shuai, Ma Pengfei, Li Wei, Wang Guangjian, Chen Yisha, Song Jiaxin, Liu Wei, Zhou Pu
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
Nanomaterials (Basel). 2022 Jul 24;12(15):2541. doi: 10.3390/nano12152541.
In this paper, we realize a 3.96 kW all-fiberized and polarization-maintained (PM) amplifier with narrow linewidth and near-diffraction-limited beam quality. Based on a master oscillator power amplifier (MOPA) configuration seeded with phase-modulated single-frequency laser, a 3.96 kW signal laser is achieved with a 3 dB linewidth of 0.62 nm at the pump power of 5.02 kW. At the maximum output power, the polarization extinction ratio (PER) is ~13.9 dB, and the beam quality (M factor) is M = 1.31, M = 1.41. As far as we know, this is the maximum output power of PM narrow linewidth fiber laser with near-diffraction-limited beam quality and all-fiber format.
在本文中，我们实现了一台3.96千瓦的全光纤化保偏（PM）放大器，其具有窄线宽和近衍射极限的光束质量。基于由相位调制单频激光器注入种子光的主振荡功率放大器（MOPA）结构，在5.02千瓦的泵浦功率下获得了3.96千瓦的信号激光，其3分贝线宽为0.62纳米。在最大输出功率时，偏振消光比（PER）约为13.9分贝，光束质量（M因子）为M = 1.31，M = 1.41。据我们所知，这是具有近衍射极限光束质量和全光纤形式的保偏窄线宽光纤激光器的最大输出功率。
