激光线宽
材料科学
光学
光纤激光器
激光器
放大器
光电子学
放大自发辐射
波长
激光束质量
功率(物理)
光纤布拉格光栅
边坡效率
物理
激光束
量子力学
CMOS芯片
作者
chuanyong ren,Yiqi Shen,Yuhao Zheng,Yuji Mao,Fei Wang,Deyuan Shen,Heyuan Zhu
出处
期刊:Optics Express
[The Optical Society]
日期:2023-06-15
卷期号:31 (14): 22733-22733
被引量:14
摘要
In this paper, we report on a high-power and widely tunable thulium-doped fiber laser (TDFL) based on a monolithic master oscillator power amplifier (MOPA) system. The master oscillator is a Tm fiber ring laser incorporating a tunable bandpass filter to realize narrow linewidth and wavelength tunable operation. The MOPA generated 1010 W ∼1039 W of output power over a tuning range of 107 nm from 1943 to 2050nm with slope efficiencies of more than 51% and spectra linewidth of ∼0.5 nm. Power stability (RMS) in ∼10 min scale is measured to be ∼0.52%. A diffraction-limited beam quality factor M 2 of ∼1.18 is measured at 920 W of laser output. Output power is pump-limited without the onset of parasitic oscillation or amplified spontaneous emission (ASE) even at the maximum power level. This is the first demonstration, to the best of our knowledge, on an all-fiber integrated wavelength-tunable TDFL at 2 µm with output power exceeding 1 kW.
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