Kilowatt-Level High-Efficiency Narrow-Linewidth All-Fiber Tm3+-Doped Laser
In this study, a kilowatt-level high-efficiency narrow-linewidth all-fiber Tm3+-doped continuous-wave laser operating at 1.95 μm is demonstrated. Benefitting from an advanced boost design of a two-stage main amplifier, it not only effectively manages heat dissipation resulting from the high pump-induced quantum defect but also realizes the controlled extraction of optical gain and improves the optical conversion efficiency. Finally, this laser system has realized an output power of 1018 W, a linewidth of 3.8 GHz, and a slope efficiency of 60.0% simultaneously. Moreover, a high optical signal-to-noise ratio of over 45 dB and excellent beam quality of M2 factors 1.19 are obtained. To the best of our knowledge, this represents the narrowest linewidth and highest slope efficiency achieved in a kilowatt-level Tm³⁺-doped fiber laser. Such a high-performance laser is ideally suited for mid-infrared generation and remote sensing applications.
Authors
- Yinhong Sun
- Yujun Feng (ORCID: https://orcid.org/0000-0001-7839-065X)
- Ye Yuan (ORCID: https://orcid.org/0000-0003-3763-1298)
- Yuxin Sun (ORCID: https://orcid.org/0000-0001-8060-3693)
- Changsheng Yang (ORCID: https://orcid.org/0000-0002-8761-4640)
- Shanhui Xu (ORCID: https://orcid.org/0000-0002-9744-6361)
- Jialong Li (ORCID: https://orcid.org/0000-0002-2863-9055)
- Qianwen Zhang (ORCID: https://orcid.org/0000-0001-6169-2555)
- Hang Liu (ORCID: https://orcid.org/0000-0003-2761-4427)
- Zhongmin Yang
- Qilai Zhao (ORCID: https://orcid.org/0000-0003-0346-1120)
- Junjie Zheng (ORCID: https://orcid.org/0000-0002-8039-6011)
- Hongyu Wang (ORCID: https://orcid.org/0000-0003-2146-2143)
Institutions
- China Academy of Engineering Physics (CN)
- Center for High Pressure Science & Technology Advanced Research (CN)
- Zhuhai Institute of Advanced Technology (CN)
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology (CN)
Publication Details
- Journal
- Photonics
- Published
- 2024-09-19
- DOI
- https://doi.org/10.3390/photonics11090877
- Citations
- 8
- Primary Topic
- Photonic Crystal and Fiber Optics
- Type
- article
- Field-Weighted Citation Impact
- 1.67
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities
- Basic and Applied Basic Research Foundation of Guangdong Province