Infrared and Laser Engineering, Volume. 51, Issue 6, 20210442(2022)
Hundred-watt-level 1 030 nm fiber-bulk hybrid amplified laser
Figures & Tables(8)
Fig. 1. Schematic diagram of fiber-bulk hybrid MOPA system. (a) Schematic diagram of all-fiber front-end structure; (b) Schematic diagram of fiber-bulk hybrid amplification system
Fig. 2. Output parameters of all fiber oscillator. (a) Pulse sequence; (b) Output spectrum
Fig. 3. Output parameters of all-fiber front-end. (a) Output power versus pump power of the main amplifier stage; (b) Pulse width; (c) Output spectrum; (d) Beam quality
Fig. 4. Output parameters of SCF amplifier. (a) Output power versus pump power of the single-pass amplification; (b) Beam quality; (c) Beam quality of the thermally depolarized signal
Fig. 5. Output parameters of main amplifier. (A) Output spectrum; (b) Output power versus pump power of the main amplifier; (c) Output pulse width; (d) Beam quality
Table 1. Physical property parameters of Yb:YAG with a doping concentration of 1 at.% at room temperature
View tableView in ArticleTable 1. Physical property parameters of Yb:YAG with a doping concentration of 1 at.% at room temperature
Parameter Symbol Value Unit Lifetime for excited level τ 0.95 ms Absorption wavelength λp 940 nm Laser wavelength λl 1 030 nm Absorption cross section at λp σap 0.75×10−20 cm2 Emission cross section at λp σep 0.15×10−20 cm2 Absorption cross section at λl σas 0.16×10−20 cm2 Emission cross section at λl σes 2.1×10−20 cm2 Density of Yb3+ ions N 1.38×10−26 m−3
Table 2. Maximum output power and gain when using different brightness pump sources
View tableView in ArticleTable 2. Maximum output power and gain when using different brightness pump sources
${I_s}$ Φ/μm NA Max pump power/W Max output power/W Gain 6 105 0.22 150 48.4 8.1 6 200 0.22 450 80.8 13.5 40 105 0.22 150 137.0 3.4 40 200 0.22 450 208.4 5.2
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Yan Xu, Zhigang Peng, Yuhang Shi, Beibei Wang, Zhaochen Cheng, Pu Wang. Hundred-watt-level 1 030 nm fiber-bulk hybrid amplified laser[J]. Infrared and Laser Engineering, 2022, 51(6): 20210442
Paper Information
Category: Lasers & Laser optics
Received: Jul. 2, 2021
Accepted: --
Published Online: Dec. 20, 2022
The Author Email: Zhigang Peng (pzg@bjut.edu.cn)
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