Watt-level Yb-doped silica glass fiber laser with a core made by sol-gel method
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摘要:
A Yb-doped silica glass fiber laser with a core made by sol-gel method is reported.The maximum power of 1.14 W is obtained with a pump power of 5.46 W at a wavelength of 976 nm.The slope efficiency is 34%.The refractive index fluctuation across the core is below 5× 10-4 at a doping level of Yb 0.15 mol%,A2Oa 4.0 mol%,and P2O5 2.0 mol%.High background attenuation of 6 dB/m at 1 053 nm limites the slope efficiency and maximum output power.