10 W 1.65 μm拉曼光纤激光器

周锦喆; 张钧翔; 李双江; 付士杰; 盛泉; 史伟; 姚建铨

doi:10.11884/HPLPB202638.250376

10 W 1.65 μm拉曼光纤激光器

doi: 10.11884/HPLPB202638.250376

周锦喆^{1, 2,},
张钧翔^{1, 2, ,},
李双江^{1, 2},
付士杰^{1, 2},
盛泉^{1, 2, 3},
史伟^{1, 2, ,},
姚建铨^{1, 2}

1.
天津大学精密仪器与光电子工程学院，天津 300072
2.
天津大学光电信息技术教育部重点实验室，天津 300072
3.
山东海富光子科技股份有限公司，山东威海 264200

基金项目: 广东省重点研发计划项目(2023B0909010005)；国家自然科学基金项目(62405218, 62375201, 62275190)；天津市自然科学基金项目(24JCONJC01490, 23JCQNJC01740)；中国博士后科学基金会与天津市联合资助（特别资助）项目(2023T011TJ)；泰山产业领军人才项目(tscx202312163)；天津市光电检测技术与系统重点实验室开放课题(2025LODTS107)

详细信息

作者简介:
周锦喆，zhoujinzhe@tju.edu.cn

通讯作者:
张钧翔，junxiang@tju.edu.cn

史　伟，shiwei@tju.edu.cn。

中图分类号: TN248
计量
- 文章访问数: 194
- HTML全文浏览量: 81
- PDF下载量: 15
- 被引次数: 0
出版历程
- 收稿日期: 2025-10-30
- 修回日期: 2025-12-20
- 录用日期: 2025-12-20
- 网络出版日期: 2026-01-04

10 W 1.65 μm Raman fiber laser

Zhou Jinzhe^{1, 2
,},
Zhang Junxiang^{1, 2
, ,},
Li Shuangjiang^{1, 2},
Fu Shijie^{1, 2},
Sheng Quan^{1, 2, 3},
Shi Wei^{1, 2
, ,},
Yao Jianquan^{1, 2}

1.
School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
2.
Key Laboratory of Optoelectronics Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
3.
HFB Photonics Co Ltd, Weihai 264200, China

摘要

摘要: U波段光纤激光器在通信、传感、科研等领域具有重要应用前景。本文以1.55 μm光纤激光器作为泵浦源，基于商用单模石英光纤实验搭建了U波段1.65 μm的拉曼光纤激光器。研究了拉曼光纤长度和输出耦合光纤光栅（OC-FBG）反射率对拉曼激光功率效率的影响规律，实验结果表明，随着拉曼激光功率的提升，Stokes光谱线宽展宽导致的光纤光栅等效反射率降低，从而发生反向功率泄露是钳制正向输出功率的主要问题。最终通过选用15.7%低反射率的OC-FBG，基于2.1 km石英光纤作为拉曼增益介质，实现了输出功率为10.1 W、3 dB带宽为2.5 nm的1648.8 nm拉曼激光输出，光光转换效率为65.2%。
- 拉曼光纤激光器 /
- U波段激光 /
- 受激拉曼散射效应 /
- 高功率激光
Abstract: Background
U-band fiber lasers are of significant value for applications in communications, sensing, and scientific research.
Purpose
This paper employs a 1.55 μm fiber laser as the pump source and demonstrates a U-band 1.65 μm Raman fiber laser based on commercially available single-mode silica fiber. The effects of the Raman fiber length and the reflectivity of the output coupling fiber Bragg grating (OC-FBG) on the power conversion efficiency of the Raman laser were systematically investigated.
Methods
The optimal Raman fiber length was determined to be 2.1 km in experiment. Then, with the optimal Raman fiber length, experiments were conducted by varying the reflectivity of the OC-FBG to analyze its influence on the output power and spectral broadening of Stokes light. By combining the measured forward and backward Stokes powers with the collected forward and backward spectra, the optimal OC-FBG reflectivity under the current experimental conditions was determined.
Results
The results indicated that as the Raman laser power increased, the broadening of the Stokes spectral linewidth reduced the effective reflectivity of the fiber Bragg grating, leading to backward power leakage, which became the main factor limiting the forward output power.
Conclusions
By selecting an OC-FBG with a low reflectivity of 15.7% and using a 2.1 km silica fiber as the Raman gain medium, a 1648.8 nm Raman laser output with a power of 10.1 W and a 3 dB bandwidth of 2.5 nm was achieved, corresponding to an optical-to-optical conversion efficiency of 65.2%.
- Raman fiber laser /
- U-band laser /
- stimulated Raman scattering effect /
- high-power laser

HTML全文

图 1 拉曼光纤激光器光路示意图

Figure 1. Schematic diagram of Raman fiber laser

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图 2 拉曼光纤长度对正向Stokes输出功率的影响

Figure 2. Forward Stokes power at different Raman fiber lengths

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图 3 不同OC-FBG反射率下，激光器的输出功率特性

Figure 3. Raman laser characteristics with different reflectivities of OC-FBGs

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图 4 不同输出光栅反射率下正反方向的Stokes光谱

Figure 4. Forward and backward Stokes spectrums at different OC-FBG reflectivities

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图 5 拉曼激光输出特性和激光转换效率

Figure 5. Raman laser output characteristics and conversion efficiency

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图 6 不同输出功率下的拉曼光谱

Figure 6. Raman spectrum at different Stokes output powers

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