Affiliation:
1. Shenzhen JPT Opto-Electronics Co.,
Abstract
We present the design and fabrication of a 3 × 1 signal combiner with high beam quality based on supermode theory. For improving beam quality, the fiber with core diameter of 34 µm and numerical aperture of 0.11 is first chosen as the output fiber. An 8.89 kW output laser with a power transmission efficiency of 97.2% and a low temperature rise coefficient of 3.5 °C/ kW at >8 kW is obtained when the combiner launched by three Yb-doped fiber lasers. In addition, the energy density distribution of the output beam is Gaussian-like and M2 factor is 2.32, which is the best beam quality compared with the presented signal combiners for high power laser to the best of our knowledge.
Funder
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics
Cited by
3 articles.
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1. 19×1 signal combiner for 10kW-level high-power fiber laser;Advanced Lasers, High-Power Lasers, and Applications XIV;2023-11-27
2. Real-time reproduction of mode-locked pulse generation via high-speed spectrum matching algorithm;Fourteenth International Conference on Information Optics and Photonics (CIOP 2023);2023-11-24
3. 高功率光纤激光器用关键无源器件研究进展;Acta Optica Sinica;2023