Wenzhen Li, Yang Chen, Yibo Wang, Dingchao Xu, Yingbo Chu, Nengli Dai, Jinyan Li. Fabrication and Laser Performance of Large Mode Area Erbium-Ytterbium Co-Doped Fiber[J]. Chinese Journal of Lasers, 2022, 49(13): 1301004
- Chinese Journal of Lasers
- Vol. 49, Issue 13, 1301004 (2022)
Fig. 1. Radial doping concentration of fiber. (a) EYDF1 fiber; (b) EYDF2 fiber
Fig. 2. Cross section and pre-fabricated rod refractive index profile of EYDF1 fiber. (a) Optical fiber cross section；(b) pre-fabricated rod refractive index profile
Fig. 3. Cross section and pre-fabricated rod refractive index profile of EYDF2 fiber. (a) Optical fiber cross section；(b) pre-fabricated rod refractive index profile
Fig. 4. Structural diagram of all-fiber MOPA laser
Fig. 5. Output laser characterization of pre-amplification stage. (a)Spectrum when signal power is pre-amplified to 5.25 W with seed light spectrum shown in inset; (b) slope efficiency of pre-amplification stage
Fig. 6. Output laser characterization of main amplification stage. (a) Wide output spectrum with narrow spectrum shown in inset; (b) slope efficiency, optical-to-optical efficiency and laser spot of main amplification stage
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Table 1. Parameters of typical erbium-ytterbium lasers
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