Chen Shi, Hanwei Zhang, Xiaolin Wang, Pu Zhou, Xiaojun Xu. kW-class high power fiber laser enabled by active long tapered fiber[J]. High Power Laser Science and Engineering, 2018, 6(2): 02000e16
- High Power Laser Science and Engineering
- Vol. 6, Issue 2, 02000e16 (2018)
Fig. 1. Schematic of the Yb-doped T-DCF based fiber amplifier.
Fig. 2. Splicing point of 
passive fiber and wide end of T-DCF.
passive fiber and wide end of T-DCF. 
Fig. 3. Measured power variation curve. Inset: measured beam pattern at 1.39 kW output power.
Fig. 4. Measured spectrum data under different output powers of the amplifier.
Fig. 5. (a) Measured temporal trace and (b) corresponding Fourier transform of different output powers.
Fig. 6. Calculated gain difference using co-pumping schemes of different fiber core sizes.
Fig. 7. Relationship between parabolic shaping factor and TMI threshold.
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