1. 406 W Narrow-Linewidth All-Fiber Amplifier With Tm-Doped Fiber Fabricated by MCVD.
- Author
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Liu, Yinzi, Li, Haiqing, Yang, Luyun, Dai, Nengli, Li, Jinyan, Cao, Chi, Xing, Yingbin, Liao, Lei, Cao, Ruiting, Zhang, Fangfang, Chen, Yisha, Wang, Yibo, and Peng, Jinggang
- Abstract
A homemade 25/400 thulium-doped silica fiber for high power laser and an all-fiber bi-direction pumped thulium-doped master-oscillator power-amplifier (MOPA) configuration with output power of 406 W are presented. The concentration of Tm2O3 and Al2O3 was set as 2.6 wt.% and 1.01 wt.% respectively. Cladding Absorption at 793 nm was measured to be 3 dB/m. The output power of 406 W was obtained by improving coating stripping of splice for thermal management, corresponding to slope efficiency of 54%. The 3 dB spectral linewidth was narrow as 84 pm. Neither amplified spontaneous emission (ASE) nor non-linear effect was observed and the output power only limited by pump power. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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