Baolai Yang, Hanwei Zhang, Qing Ye, Haoyang Pi, Chen Shi, Rumao Tao, Xiaolin Wang, Xiaojun Xu, "4.05 kW monolithic fiber laser oscillator based on home-made large mode area fiber Bragg gratings," Chin. Opt. Lett. 16, 031407 (2018)

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- Chinese Optics Letters
- Vol. 16, Issue 3, 031407 (2018)

Fig. 1. Experimental setup (LDs, laser diodes; YDF, ytterbium-doped fiber; CLS, cladding light stripper; CO, collimator; PM, power meter; HR, high reflector).

Fig. 2. (a) Output power and standard deviation of the temporal signals at different pump powers, (b) the temporal signal of the output laser and its Fourier spectrum at the operation of 4.05 kW.

Fig. 3. Optical spectra of the output laser at different power levels.

Fig. 4. Beam quality of the output laser.

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