Widely-tunable all-fiber Tm doped MOPA with >1 kW of output power

被引：28
|
作者：
Ren, Chuanyong [1 ,2 ]
Shen, Yiqi [1 ]
Zheng, Yuhao [1 ]
Mao, Yuji [1 ]
Wang, Fei [3 ]
Shen, Deyuan [1 ,3 ]
Zhu, Heyuan [2 ]
机构：
[1] Jiangsu Normal Univ, Sch Phys & Elect Engn, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Peoples R China
[2] Fudan Univ, Dept Opt Sci & Engn, Shanghai 200433, Peoples R China
[3] Jiangsu Collaborat Innovat Ctr Adv Laser Technol &, Xuzhou, Peoples R China
来源：
OPTICS EXPRESS | 2023年 / 31卷 / 14期
基金：
中国国家自然科学基金;
关键词：
LASER; SILICA;
D O I：
10.1364/OE.494015
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
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 M2 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 & mu;m with output power exceeding 1 kW.
引用
收藏
页码：22733 / 22739
页数：7
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