10-W-level diode-pumped compact 2.78 μm ZBLAN fiber laser
10-W-level diode-pumped compact 2.78 μm ZBLAN fiber laser
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DOI：
10.1364/ol.32.000026
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发表时间：
2007-01-01
期刊：
影响因子：
3.6
通讯作者：
Jain, Ravi
中科院分区：
文献类型：
--
作者：
Zhu, Xiushan;Jain, Ravi
报道了用准直的100 W 975 nm激光二极管阵列泵浦4 m重掺铒ZBLAN双包层光纤激光器，在3 μ m附近获得> 9 W横基模连续波输出。该光纤激光器的泵浦阈值约为1 W，斜率效率为21.3%。在低泵浦功率下，自由振荡的峰值波长约为2708 nm，在高泵浦功率下，自由振荡的峰值波长移动到2785 nm附近。当泵浦功率为42.8W时，获得了9 W的激光输出。但是，当抽运功率超过42.8W时，激光输出出现脉冲激光的剧烈波动，并且由于抽运端面的光学损伤而导致工作中断。因此，缓解工作波动，热管理，并加强泵浦光纤是10-W级中红外ZBLAN光纤激光器的稳定运行的关键考虑因素。(c)2006年美国光学学会。
We report on > 9 W transverse-fundamental-mode CW output near 3 mu m from a 4 m heavily erbium-doped ZBLAN double-clad fiber laser pumped by a collimated 100 W 975 nm laser diode array. The pump threshold of the fiber laser was about 1 W, and the slope efficiency was 21.3%. The peak wavelength of free running was about 2708 nm at low pump power and moved to around 2785 nm at high pump power. Output of 9 W was obtained when the launched pump power was 42.8 W. The output, however, fluctuated intensively like a pulsed laser, and the operation broke down with optical damage of the pumping end facet when the pump was increased beyond 42.8 W. Therefore, alleviation of the operation fluctuation, heat management, and strengthening the pumping fiber are crucial considerations for the stable operation of 10-W-level mid-IR ZBLAN fiber lasers. (c) 2006 Optical Society of America.