Chinese Optics Letters, 2007, 5 (7): 412, Published Online: Jul. 11, 2007
113-W in-phase mode output from two ytterbium-doped large-core double-cladding fiber lasers 
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光纤激光器 位相锁定 自成像 060.2320 Fiber optics amplifiers and oscillators 140.3290 Laser arrays 030.1670 Coherent optical effects 070.6110 Spatial filtering
Abstract
Phase locking for two ytterbium-doped large-core fiber lasers has been demonstrated by using a self-imaging confocal resonator with a spatial filter. Steady high-contrast interference stripes are observed. The visibilities of coherent and incoherent stripes are 59% and 6%, respectively. The measured width of the central strip is in good agreement with the calculated result. For in-phase mode, the output power of the phase-locked fiber laser array is up to 113 W and corresponding slope efficiency is 38.5%.
Bing He, Qihong Lou, Jun Zhou, Yinghui Zheng, Dong Xue, Jingxing Dong, Yunrong Wei, Fangpei Zhang, Yunfeng Qi, Jianqiang Zhu, Jinyan Li, Shiyu Li, Zhijiang Wang. 113-W in-phase mode output from two ytterbium-doped large-core double-cladding fiber lasers[J]. Chinese Optics Letters, 2007, 5(7): 412.
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