Frontiers in Physics (Sep 2023)
A 4.8-kW high-efficiency 1050-nm monolithic fiber laser amplifier employing a pump-sharing structure
- Xiangming Meng,
- Fengchang Li,
- Baolai Yang,
- Baolai Yang,
- Baolai Yang,
- Yun Ye,
- Junyu Chai,
- Xiaoming Xi,
- Xiaoming Xi,
- Xiaoming Xi,
- Peng Wang,
- Peng Wang,
- Peng Wang,
- Hanshuo Wu,
- Hanshuo Wu,
- Hanshuo Wu,
- Chen Shi,
- Chen Shi,
- Chen Shi,
- Hanwei Zhang,
- Hanwei Zhang,
- Hanwei Zhang,
- Xiaolin Wang,
- Xiaolin Wang,
- Xiaolin Wang,
- Kai Han,
- Kai Han
Affiliations
- Xiangming Meng
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Fengchang Li
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Baolai Yang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Baolai Yang
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Baolai Yang
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
- Yun Ye
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Junyu Chai
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Xiaoming Xi
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Xiaoming Xi
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Xiaoming Xi
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
- Peng Wang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Peng Wang
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Peng Wang
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
- Hanshuo Wu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Hanshuo Wu
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Hanshuo Wu
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
- Chen Shi
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Chen Shi
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Chen Shi
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
- Hanwei Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Hanwei Zhang
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Hanwei Zhang
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
- Xiaolin Wang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Xiaolin Wang
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Xiaolin Wang
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
- Kai Han
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Kai Han
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- DOI
- https://doi.org/10.3389/fphy.2023.1255125
- Journal volume & issue
-
Vol. 11
Abstract
The power scaling of ytterbium-doped fiber (YDF) lasers emitting at the wavelength range of 1030 nm–1060 nm has been limited by amplified spontaneous emission (ASE), stimulated Raman scattering (SRS) effect, and transverse mode instability (TMI). These effects pose challenges in achieving a high-output power laser within the range of 1030 nm–1060 nm while maintaining a high signal-to-noise ratio. Based on a counter-pumped fiber laser amplifier utilizing our self-developed ytterbium-doped fiber, we have successfully showcased a 4.8-kW laser output at 1050 nm, accompanied by an 85.3% slope efficiency and nearly diffraction-limited beam quality. By effectively applying ASE and TMI, and controlling the Raman Stokes at ∼17 dB below the primary signal wavelength, we have achieved optimal performance at the maximum power level. This high efficiency has been attained through a pump-sharing structure combined with cost-effective, non-wavelength-stabilized 976-nm laser diodes.
Keywords
- short-wavelength fiber lasers
- stimulated Raman scattering
- amplified spontaneous emission
- pump-sharing structure
- high power
