Man Jiang, Pengfei Ma, Long Huang, Jiangming Xu, Pu Zhou, Xijia Gu. kW-level, narrow-linewidth linearly polarized fiber laser with excellent beam quality through compact one-stage amplification scheme[J]. High Power Laser Science and Engineering, 2017, 5(4): 04000e30
- High Power Laser Science and Engineering
- Vol. 5, Issue 4, 04000e30 (2017)
Fig. 1. Experimental setup of the narrow-linewidth, linearly polarized seed laser and fiber amplifier. LD: laser diode; PC: polarization controller; ISO: isolator.
Fig. 2. Reflection spectra of the HR-FBG and transmission spectra of OC-FBG on fast and slow axis, respectively.
Fig. 3. Master oscillator: (a) laser output power versus pump power; (b) spectral linewidth at different output power.
Fig. 4. Laser output power versus pump power.
Fig. 5. Optical spectrum at 1018 W maximum laser.
Fig. 6. An enlarged view of the laser spectrum at different output power.
Fig. 7. Spectral linewidth as a function of laser power.
Fig. 8. Beam quality factor ($M^{2}$ ) of the output laser beam at 1018 W.
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