Chinese Journal of Lasers, Volume. 51, Issue 8, 0801005(2024)
57 W 2.05
Figures & Tables(6)
Fig. 2. Simulation results of thulium-doped fiber laser. (a) Amplified signal power versus fiber length and incident signal power; (b) output power versus fiber length at 4.4 W incident signal power
Fig. 3. Output spectra before and after seed light passes through FWDM and transmission spectrum of FWDM with output spectrum of seed light in 2046‒2051 nm shown in inset
Fig. 4. Output characteristics of first amplifier. (a) Output power; (b) output spectrum
Fig. 5. Output characteristics of second amplifier. (a) Output power; (b) output spectrum in1800‒2300 nm; (c) output spectrum in 2046‒2051 nm
Table 1. Simulation parameters of thulium-doped fiber lasers
View tableTable 1. Simulation parameters of thulium-doped fiber lasers
Parameter Symbol Value Parameter Symbol Value Wavelength of pump laser λp 793 nm Wavelength of signal laser λs 2.05 μm Lifetime of level 3F4 τ10 337.4 μs Lifetime of level 3H4 τ31 14.3 μs Planck constant h 6.626×10-34 J∙s Core area Acore 7.85×10-11 m2 Overlap factor of pump mode field Γp 0.006 Overlap factor of signal mode field Γs 0.85 Thulium particle concentration N 3×1026 m-3 Emission cross section at 2.05 μm σe（λs） 2.1×10-25 m2 Absorption cross section at 793 nm σa（λp） 8.5×10-25 m2 Absorption cross section at 2.05 μm σa（λs） 0 Loss coefficient at 793 nm αp 1.99×10-3 m-1 Loss coefficient at 2.05 μm αs 1.2×10-2 m-1 Cross relaxation rate K3011 1.8×10-22 m3/s Inverse cross relaxation rate K1130 1.5×10-23 m3/s
Tools
Get Citation
Copy Citation Text
Xuewen Luo, Lu Zhang, Shijie Fu, Quan Sheng, Junxiang Zhang, Wei Shi, Jianquan Yao. 57 W 2.05
Paper Information
Category: laser devices and laser physics
Received: Oct. 9, 2023
Accepted: Dec. 11, 2023
Published Online: Mar. 29, 2024
The Author Email: Fu Shijie (shijie_fu@tju.edu.cn), Shi Wei (shiwei@tju.edu.cn)
CSTR:32183.14.CJL231260
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20