多模光纤激光靶面辐照匀滑特性

连铸, 2014, 31(6): 683-689. doi: 10.3969/j.issn.1007-5461.2014.06.007

多模光纤激光靶面辐照匀滑特性

韩海啸 ^1, , 许立新 ^2, , 王声波 ^3, , 徐腾 ^4, , 林健 ^5,

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关键词：激光技术 , 激光匀滑 , 光纤激光器 , 透镜阵列 , 惯性约束聚变

Smoothness characteristics of target plane radiation from multi-mode fiber laser

Keywords： laser techniques: laser smooth , fiber laser , lens array , inertial confinement fusion ,

研究了基于光纤放大网络的激光惯性约束核聚变靶面光场的均匀特性,采用透镜阵列匀滑多束多模光纤激光器集束后的光场,设计了合适的透镜阵列并进行相应的实验,获得聚焦后靶面处的极小光斑,其靶面光场顶部区域均方根(RMS)低于5％.同时实验上研究了靶面位置和集束激光器数目对匀滑效果的影响,合适的靶面位置和增加集束激光器数目能明显改善匀滑效果.

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