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以光纤光栅为谐振腔搭建了波长为1020nm的光纤激光器,并通过两级级联放大获得了590mW的最大输出功率.利用获得的波长为1020nm的激光进行了波长为1064nm种子光同带抽运放大,实验研究了不同增益光纤长度时放大器的输出功率和转换效率.当增益光纤长度为8.5m时,放大器最大输出功率为385mW,斜率效率为81%.进行了波长为976nm的半导体激光器直接抽运波长为1064nm种子光的实验.在增益光纤长度最优时,其斜率效率为56.4%.实验结果表明,同带抽运方式比传统抽运方式具有更高的转换效率.研究结果可为波长为1020nm的激光高功率放大和波长为1064nm的光纤激光高功率同带抽运放大提供一定的参考.
A fiber laser with a wavelength of 1020nm was constructed by using a fiber grating as a resonator, and the maximum output power of 590mW was obtained by two stages of cascade amplification. The 1064nm wavelength , The output power and the conversion efficiency of the amplifier are experimentally studied for different gain fiber lengths.The maximum output power of the amplifier is 385mW and the slope efficiency is 81% when the gain fiber length is 8.5m. The semiconductor laser with a wavelength of 976nm is directly pumped The experimental results show that the same pump with a pumping efficiency than the traditional method has higher conversion efficiency.The results for the wavelength of 1020nm high-power laser amplification and high-power laser with a wavelength of 1064nm provide the same reference with pump amplification.