简单MOPA结构在<styled-content style-type="number">1035</styled-content> nm波段实现2 kW近单模输出

王鹏; 杨成; 吴函烁; 叶云; 奚小明; 张汉伟; 王小林; 习锋杰

doi:10.11884/HPLPB202537.250287

简单MOPA结构在1035 nm波段实现2 kW近单模输出

doi: 10.11884/HPLPB202537.250287

王鹏^{1, 2, 3,},
杨成¹,
吴函烁^{1, 2, 3},
叶云^{1, 2, 3},
奚小明^{1, 2, 3},
张汉伟^{1, 2, 3},
王小林^{1, 2, 3, ,},
习锋杰^{1, 2, 3, ,}

1.
国防科技大学前沿交叉学科学院，长沙 410073
2.
国防科技大学南湖之光实验室，长沙 410073
3.
高能激光技术湖南省重点实验室，长沙 410073

基金项目: 长沙市杰出创新青年培养计划项目(kq2406002)；国防科技大学自主创新科学基金项目（25-ZZCX-XXXJS-3）；国防科技大学自主科研项目（202301-XXGC-XX-045）

详细信息

作者简介:
王　鹏，1169723259@qq.com

通讯作者:
王小林，chinaphotonics@163.com

习锋杰，xifengjie@163.com。

中图分类号: O439
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- 文章访问数: 105
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- 被引次数: 0
出版历程
- 收稿日期: 2025-08-25
- 修回日期: 2025-09-08
- 录用日期: 2025-09-07
- 网络出版日期: 2025-09-08
- 刊出日期: 2025-09-05

Simple MOPA fiber laser achieved 2 kW near-single-mode output at 1035 nm

Wang Peng^{1, 2, 3
,},
Yang Cheng¹,
Wu Hanshuo^{1, 2, 3},
Ye Yun^{1, 2, 3},
Xi Xiaoming^{1, 2, 3},
Zhang Hanwei^{1, 2, 3},
Wang Xiaolin^{1, 2, 3
, ,},
Xi Fengjie^{1, 2, 3
, ,}

1.
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2.
Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China
3.
Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China

摘要

摘要: 半导体直接泵浦的短波长高亮度掺镱光纤激光器在非线性变频、光纤级联泵浦等方面有着十分重要的应用。基于大模场掺镱光纤搭建了全光纤结构的1035 nm光纤激光主振荡功率放大系统，实现了2040 W的最高功率输出，斜率效率约为70%，最高输出功率下x和y方向的光束质量因子（M²）分别为1.33和1.22，放大自发辐射抑制比为32 dB，是目前报道的输出功率最高的1035 nm波段近单模简单MOPA结构光纤激光器。
- 掺镱光纤激光器 /
- 短波光纤激光器 /
- 放大自发辐射
Abstract: Background
The 1035 nm short-wavelength-band fiber laser serves as a critically important light source with extensive and growing applications across numerous advanced technological fields. Its unique spectral properties make it highly suitable for spectral beam combining (SBC), nonlinear frequency conversion, and high-resolution lidar systems. However, the power scaling of 1035 nm fiber lasers has long been constrained by the amplified spontaneous emission (ASE) effect. This phenomenon has historically impeded significant progress, with the output power from conventional master oscillator power amplifier (MOPA) configurations remaining confined below 2 kW, creating a bottleneck for higher-performance applications.
Purpose
To realize high-power, high-brightness laser output in the 1035 nm band, we designed and constructed a counter-pumped MOPA fiber laser.
Methods
The system’s performance was enhanced through multi-parameter optimization, including optimizing the temporal characteristics of the fiber seed source, the bending and coiling parameter of the gain fiber in the amplifier stage, and refining the backward pump scheme.
Results
Finally, when the seed laser power was 24 W and the total pump power was 2.9 kW, a maximum output power of over 2 kW was reached, and the corresponding optical-to-optical conversion efficiency of the amplifier stage was approximately 69.5%. At the maximum output power, the ASE suppression ratio was measured to be around 32 dB, indicating effective control over noise. Furthermore, the beam quality factors were measured to be $M_x^2 $=1.33 and $M_y^2 $=1.22, confirming near-diffraction-limited, single-mode operation, and high spatial beam quality.
Conclusions
The results represent a significant stride forward in the power scaling of high-brightness 1035 nm fiber lasers. Next research will focus on further elevating the output power and beam quality by implementing seed source with more stable temporal characteristics and optimizing the overall fiber laser structure to mitigate ASE and other nonlinear effects.
- ytterbium-doped fiber laser /
- short-wavelength fiber laser /
- amplified spontaneous emission

HTML全文

图 1 基于MOPA结构的1035 nm光纤激光器光路结构图

Figure 1. Schematic diagram of 1035 nm fiber laser based on MOPA structure

下载: 全尺寸图片幻灯片

图 2 基于MOPA结构的1035 nm光纤激光器测试结果。

Figure 2. Experimental results of the 1035 nm fiber laser based on MOPA structure

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参考文献(5)

[1]	Wirth C, Schmidt O, Tsybin I, et al. High average power spectral beam combining of four fiber amplifiers to 8.2 kW[J]. Optics Letters, 2011, 36(16): 3118-3120. doi: 10.1364/OL.36.003118
[2]	邬幸富. 医用515 nm激光关键技术研究[D]. 长春: 长春理工大学, 2013 Wu Xingfu. Research on key technologies of medical 515 nm laser[D]. Changchun: Changchun University of Science and Technology, 2013
[3]	Chen Xin, Xu Chunsheng , Liu Shan, et al. Influences of focusing conditions on optical poling in lithium niobate using a 1035 nm femtosecond fiber laser[J]. Applied Optics, 2023, 62(23): 6212-6217.
[4]	Tao R M, Ma P F, Wang X L, et al. Study of wavelength dependence of mode instability based on a semi-analytical model[J]. IEEE Journal of Quantum Electronics, 2015, 51(8): 1-6.
[5]	Platonov N, Shkurikhins O, Fomin V, et al. High efficient kW level single-mode ytterbium fiber lasers in all- fiber format with diffraction-limited beam at wavelengths in 1000-1030 nm spectral range[C] //Fiber Lasers XVII: Technology and Systems. 2020.