Yulong Cui, Wei Huang, Zhiyue Zhou, Hao Li, Meng Wang, Zilun Chen, Zefeng Wang. Highly efficient and stable coupling of kilowatt-level continuous wave laser into hollow-core fibers[J]. Chinese Optics Letters, 2022, 20(4): 040602
- Chinese Optics Letters
- Vol. 20, Issue 4, 040602 (2022)
Fig. 1. (a) Experiment setup of the power transmission system. Inset: cross-section electronic micrograph of HCF. (b) Transmission loss of HCF used at 1 µm wavelength band; (c) thermal image of the input end.
Fig. 2. (a) Cross-section micrograph of HCF after splicing with end-cap; (b) schematic of test for Fresnel reflection.
Fig. 3. Measured transmission power and transmission efficiency versus input power.
Fig. 4. Power stability of the laser source and the transmission power of 915 W and 950 W.
Fig. 5. (a) Beam quality M2 versus transmission power; (b) beam quality M2 versus time when the transmission power is 900 W. Inset: beam profiles of waist.
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