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113-W in-phase mode output from two ytterbium-doped large-core double-cladding fiber lasers 总被引:9,自引:0,他引:9
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%. 相似文献
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采用MCVD方法研发了掺镱双包层光纤,并对其结构特性、荧光特性和激光特性进行了测试和研究。其D形内包层尺寸为400/450μm,数值孔径为0.36,纤芯直径约为16μm,数值孔径约为0.18。荧光谱线的范围为1 000~1 140 nm,1 030 nm处的峰宽大于50 nm。采用大功率激光二极管单端泵浦6 m长的双包层光纤,在泵浦入纤功率为61 W时, 获得了32 W的激光输出,斜率效率为64%。该光纤在高功率处未发现饱和现象,通过优化光纤参数与泵浦方式还可以提高转化效率和输出功率。实验表明该光纤可以取代进口光纤用作高功率激光器件。 相似文献
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