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- Optics Letters
- Vol. 46,
- Issue 10,
- pp. 2404-2407
- (2021)
- •https://doi.org/10.1364/OL.425714
Jiaxin Song, Pengfei Ma, Shuai Ren, Song Zhang, Wei Liu, Hu Xiao, Hanwei Zhang, and Pu Zhou
Author Affiliations
Jiaxin Song,1,†Pengfei Ma,1,†Shuai Ren,1Song Zhang,1Wei Liu,1,2Hu Xiao,1Hanwei Zhang,1and Pu Zhou1,3
1College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, Hunan 410073, China
2e-mail: aiken09@163.com
3e-mail: zhoupu203@163.com
†These authors contributed equally to this Letter.
ORCID
| Jiaxin |  https://orcid.org/0000-0002-3728-0224 |
| Pengfei | https://orcid.org/0000-0002-6146-7419 |
| Wei | https://orcid.org/0000-0001-7864-9369 |
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Jiaxin Song, Pengfei Ma, Shuai Ren, Song Zhang, Wei Liu, Hu Xiao, Hanwei Zhang, and Pu Zhou, "2 kW narrow-linewidth Yb-Raman fiber amplifier," Opt. Lett. 46, 2404-2407 (2021)
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Table of Contents Category
- Lasers and Laser Optics
Optics & Photonics Topics
The topics in this list come from the Optics and Photonics Topics applied to this article.
- Diode lasers
- Fiber lasers
- Graded index fibers
- High power fiber lasers
- Nonlinear frequency conversion
- Raman lasers
History
- Original Manuscript: March 22, 2021
- Revised Manuscript: April 26, 2021
- Manuscript Accepted: April 26, 2021
- Published: May 6, 2021
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Abstract
In this Letter, we report a high-power narrow-linewidth Yb-Raman fiber amplifier with a high second-order Raman threshold and high intensity stability. By employing two temporally stable seed lasers, over 2kW output power at 1120nm is achieved at a pump power of 2.6kW with an optical-to-optical efficiency of 76.3%. The 3dB linewidth of the 1120nm Raman-signal laser varies slightly from 0.41nm to 0.53nm, and the power ratio of the second-order Raman Stokes light is only about ${-}{46.3}\;{\rm{dB}}$ at the output power of 2kW. The results further confirm that the technique of employing temporally stable seed lasers is superior to the power scaling of narrow-linewidth Yb-Raman fiber amplifiers. To the best of our knowledge, it is the first demonstration of an over 2kW narrow-linewidth fiber laser operating at 1120nm.
© 2021 Optical Society of America
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Data Availability
Data underlying the results presented in this Letter are not publicly available at this time but may be obtained from the authors upon reasonable request.
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