Frontiers in Physics (Jun 2023)
Mitigating transverse mode instability in fiber laser oscillator by employing direct pump modulation
- Junyu Chai,
- Junyu Chai,
- Junyu Chai,
- Wenguang Liu,
- Wenguang Liu,
- Wenguang Liu,
- Xiaolin Wang,
- Xiaolin Wang,
- Xiaolin Wang,
- Qiong Zhou,
- Qiong Zhou,
- Qiong Zhou,
- Jiangbin Zhang,
- Jiangbin Zhang,
- Jiangbin Zhang,
- Pengfei Liu,
- Pengfei Liu,
- Pengfei Liu,
- Hanwei Zhang,
- Hanwei Zhang,
- Hanwei Zhang,
- Yao Lu,
- Yao Lu,
- Yao Lu,
- Dan Zhang,
- Dan Zhang,
- Dan Zhang,
- Zongfu Jiang,
- Zongfu Jiang,
- Zongfu Jiang,
- Guomin Zhao,
- Guomin Zhao,
- Guomin Zhao
Affiliations
- Junyu Chai
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Junyu Chai
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Junyu Chai
- Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, China
- Wenguang Liu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Wenguang Liu
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Wenguang Liu
- Hunan Provincial Key Laboratory of High Energy Laser 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, Changsha, China
- Qiong Zhou
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Qiong Zhou
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Qiong Zhou
- Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, China
- Jiangbin Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Jiangbin Zhang
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Jiangbin Zhang
- Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, China
- Pengfei Liu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Pengfei Liu
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Pengfei Liu
- Hunan Provincial Key Laboratory of High Energy Laser 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, Changsha, China
- Yao Lu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Yao Lu
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Yao Lu
- Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, China
- Dan Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Dan Zhang
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Dan Zhang
- Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, China
- Zongfu Jiang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Zongfu Jiang
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Zongfu Jiang
- Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, China
- Guomin Zhao
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China
- Guomin Zhao
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China
- Guomin Zhao
- Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, China
- DOI
- https://doi.org/10.3389/fphy.2023.1212811
- Journal volume & issue
-
Vol. 11
Abstract
The transverse mode instability (TMI) is a thermal-optical effect, inducing a sudden deterioration of beam quality and average power. This non-linear effect will greatly limit the power scaling of fiber lasers. We demonstrate a direct pump modulation to mitigate TMI in a 30 μm-core-diameter all-fiber laser oscillator. It only relies on function generator and pump drivers without the need of feedback control units. The groups of pump LDs and pump drivers and the phase difference between the channels of function generator have a great impact on the beam stability. Compared with the TMI threshold 180 W in continuous wave (CW) mode, the maximum average output power of a stabilized beam is increased up to 310 W via a multi-parameter-based direct pump modulation.
Keywords
