光学
材料科学
光纤激光器
激光器
激光功率缩放
放大器
激光束质量
包层(金属加工)
连续波
光纤布拉格光栅
分布反馈激光器
光电子学
光谱宽度
边坡效率
保偏光纤
光纤
光纤传感器
物理
激光束
CMOS芯片
冶金
作者
Xu Yang,Qiang Fang,Yuguo Qin,Xiangjie Meng,Wei Shi
出处
期刊:Applied optics
[The Optical Society]
日期:2015-11-03
卷期号:54 (32): 9419-9419
被引量:40
摘要
We demonstrate a monolithic continuous wave (CW) fiber laser source at 1070 nm, producing 2 kW laser power with a very narrow spectral width (∼75 GHz) and near-diffraction-limited beam quality (M2<1.4). The laser consists of a CW fiber laser oscillator and two double cladding fiber amplifiers in the master oscillator-power amplifier configuration. The master oscillator is a distributed Bragg reflected fiber laser, producing ∼6 W laser power with ∼25 GHz spectral width. The two double cladding fiber amplifiers were developed to enhance the laser power up to ∼200 and ∼2050 W, respectively. The slope efficiency of the main amplifier reaches 84.8%. Under the full power output, the 3 dB spectral width and 20 dB spectral width of the laser emission spectrum was ∼75 GHz and 1.2 nm, respectively.
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