Guangjian Wang, Jiaxin Song, Yisha Chen, Shuai Ren, Pengfei Ma, Wei Liu, Tianfu Yao, Pu Zhou. Six kilowatt record all-fiberized and narrow-linewidth fiber amplifier with near-diffraction-limited beam quality[J]. High Power Laser Science and Engineering, 2022, 10(4): 04000e22
- High Power Laser Science and Engineering
- Vol. 10, Issue 4, 04000e22 (2022)
Fig. 1. Experimental setup of the all-fiberized and narrow-linewidth fiber amplifier.
Fig. 2. Basic output properties of the fiber amplifier employing the forward pumping scheme: (a) power curve; (b) output spectrum at the maximum output power; (c) Fourier spectrum of the signal laser at the maximum output power.
Fig. 3. Basic output properties of the fiber amplifier employing the backward pumping scheme: (a) power curve; (b) output spectrum at the maximum output power; (c) Fourier spectrum of the signal laser at the maximum output power.
Fig. 4. Basic output properties of the fiber amplifier employing the bidirectional pumping scheme: (a) power curve; (b) output spectra.
Fig. 5. Output properties of the signal laser at the maximum output power in the fiber amplifier employing the bidirectional pumping scheme: (a) Fourier spectrum; (b) beam quality factor (the insert figure is beam profile at the location of Z = 393.5 mm).
Fig. 6. The 3 dB spectral linewidths of the signal laser at different output powers.
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