Chinese Journal of Lasers, Volume. 47, Issue 4, 401004(2020)
Power Characteristics and Thermal Effects of the Gamma-Ray Radiated Fiber Lasers
Figures & Tables(10)
Fig. 1. Radiation-induced loss of gain fiber with different a and b. (a) Radiation-induced loss curves; (b) detailed view of dotted frame in
Fig. 5. Characteristic curves of gain fiber in forward-pumped lasers. (a) Power of signal light and pump light; (b) temperature rise in the fiber core
Fig. 6. Characteristic curves of gain fiber in bi-direction pumped lasers. (a) Power of signal light and pump light; (b) temperature rise in the fiber core
Fig. 7. Characteristic curves of gain fiber in backward-pumped lasers. (a) Power of signal light and pump light; (b) temperature rise in the fiber core
Table 1. Parameters of simulation
View tableTable 1. Parameters of simulation
Parameter Value Parameter Value λp 976 nm σap 2.47×10-24 m2 λs 1 070 nm σep 2.44×10-24 m2 Γp 0.0025 σes 3.93×10-27 m2 Γs 0.9586 σas 3.31×10-25 m2 αp 0.003 m-1 τ 0.9×10-3 s αs 0.005 m-1 N 5×1025 cm-3 R1 0.99 R2 0.04 r1 10×10-6 m k1 1.38 W·m-1·K-1 r2 200×10-6 m k2 1.38 W·m-1·K-1 r3 275×10-6 m k3 0.2 W·m-1·K-1
Table 2. Output power and optical-to-optical conversion efficiency of fiber lasers
View tableTable 2. Output power and optical-to-optical conversion efficiency of fiber lasers
Radiation dose /Gy Forward pumping Bi-direction pumping Backward pumping Output power /W Efficiency /% Output power /W Efficiency /% Output power /W Efficiency /% 0 833.78 83.38 845.67 84.57 853.49 85.35 1000 165.96 16.60 301.47 30.15 351.77 35.18
Table 3. Max temperature rise and the corresponding position
View tableTable 3. Max temperature rise and the corresponding position
Radiation dose /Gy Forward pumping Bi-direction pumping Backward pumping Max ΔT /K Position /m Max ΔT /K Position /m Max ΔT /K Position /m 0 32.01 0 21.94 13.6 37.35 13.6 1000 63.27 3.51 64.94 13.6 86.79 13.6
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Chen Hongwei, Tao Mengmeng, Zhao Haichuan, Zhao Liu, Luan Kunpeng, Shen Yanlong, Huang Ke, Feng Guobin. Power Characteristics and Thermal Effects of the Gamma-Ray Radiated Fiber Lasers[J]. Chinese Journal of Lasers, 2020, 47(4): 401004
Paper Information
Category: laser devices and laser physics
Received: Oct. 24, 2019
Accepted: --
Published Online: Apr. 8, 2020
The Author Email: Hongwei Chen (chenhongwei@nint.ac.cn)
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