基于简单MOPA结构实现3.08 kW全光纤窄线宽线偏振激光输出

王岩山; 王珏; 常哲; 彭万敬; 孙殷宏; 马毅; 高清松; 张凯; 唐淳

doi:10.11884/HPLPB202032.200004

基于简单MOPA结构实现3.08 kW全光纤窄线宽线偏振激光输出

doi: 10.11884/HPLPB202032.200004

王岩山^{1, 2, 3,},
王珏^{1, 2},
常哲^{1, 2, 3},
彭万敬^{1, 2},
孙殷宏^{1, 2,},
马毅^{1, 2,},
高清松^{1, 2},
张凯^{1, 2},
唐淳^{1, 2}

1.
中国工程物理研究院应用电子学研究所，四川绵阳 621900
2.
中国工程物理研究院高能激光科学与技术重点实验室，四川绵阳 621900
3.
中国工程物理研究院研究生部，北京 100088

基金项目: 国家自然科学基金项目（61605191）；中国工程物理研究院院长基金项目（YZJJLX2016011）

详细信息

作者简介:
王岩山(1985—)，男，硕士，主要从事高功率光纤激光技术研究；wangyanshande@163.com

孙殷宏(1983—)，男，博士，主要从事光纤激光技术研究；sunyinhong@caep.cn

马毅(1977—)，男，硕士，主要从事光纤激光及固体激光技术研究；rufinecn@163.com

中图分类号: TN248；O439
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出版历程
- 收稿日期: 2019-11-22
- 修回日期: 2019-12-28
- 刊出日期: 2019-12-26

Output of 3.08 kW narrow linewidth linearly polarized all-fiber laser based on a simple MOPA structure

Wang Yanshan^{1, 2, 3
,},
Wang Jue^{1, 2},
Chang Zhe^{1, 2, 3},
Peng Wanjing^{1, 2},
Sun Yinhong^{1, 2
,},
Ma Yi^{1, 2
,},
Gao Qingsong^{1, 2},
Zhang Kai^{1, 2},
Tang Chun^{1, 2}

1.
Institute of Applied Electronics, CAEP, Mianyang 621900, China
2.
The Key Laboratory of Science and Technology on High Energy Laser, CAEP, Mianyang 621900, China
3.
Graduate School of CAEP, Beijing 100088, China

摘要

摘要: 基于简单的主振荡功率放大结构，演示了一种高功率窄线宽线性偏振全光纤激光器，其最大输出功率为3.08 kW，3 dB线宽为0.2 nm。在整个功率缩放过程中，偏振消光比约为94%，光束质量M ²约为1.4。这是国内外首次实现3 kW全保偏光纤激光输出，与基于相位调制的窄线宽激光器相比，该激光器可实现近似的线宽，同时具有受激布里渊散射阈值高、系统结构简单、成本低等特点。
- 全光纤激光器 /
- 主振荡功率放大 /
- 窄线宽 /
- 线偏振
Abstract: We demonstrated a narrow linewidth linearly polarized all-fiber laser operating at maximum output power of 3.08 kW with a 3 dB linewidth of 0.2 nm based on a simple master oscillator power amplifier (MOPA) structure. The polarization extinction ratio (PER) is about 94% and the M ² is about 1.4 along the whole power scaling process. This is the first demonstration of a 3 kW linearly polarized all-fiber laser output. Compared with the narrow linewidth fiber amplifier based on phase modulation, this system can achieve a nearly same linewidth. Meanwhile, it has the characteristics of high stimulated Brillouin scattering (SBS) threshold, simple structure, and low cost, etc.
- all-fiber laser /
- master oscillator power amplifier /
- narrow linewidth /
- linear polarization

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图 1 实验结构

Figure 1. Experimental setup

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图 2 放大器分别在前向、后向、双向泵浦情况下测量的光谱图

Figure 2. Measured spectra of the amplifier in cases of (a) forward pumping, (b) backword counter pumping, (c) bidirectional bi-pumping

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图 3 最大激光功率时的拉曼光谱

Figure 3. SRS spectrum at the maximum laser power

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图 4 偏振消光比及光束质量随激光功率的变化关系

Figure 4. Polarization extinction ratio and M ² vs laser power

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参考文献(8)

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[7]	王岩山, 马毅, 孙殷宏, 等. 2.62 kW, 30 GHz窄线宽线偏振近衍射极限全光纤激光器[J]. 中国激光, 2019, 46:1215001. (Wang Yanshan, Ma Yi, Sun Yinhong, et al. 2.62 kW, 30 GHz linearly polarized all-fiber laser with narrow linewidth and near-diffraction-limit beam quality[J]. Chinese Journal of Lasers, 2019, 46: 1215001 doi: 10.3788/CJL201946.1215001
[8]	Wang Y, Ma Y, Peng W, et al. 2.4 kW, narrow-linewidth, near-diffraction-limited all-fiber laser based on a one-stage master oscillator power amplifier[J]. Laser Phys Lett, 2020, 17: 015102. doi: 10.1088/1612-202X/ab5c88