The special shaped laser spot for driving indirect-drive hohlraum with multi-beam incidence

The special shaped laser spot for driving indirect-drive hohlraum with multi-beam incidence
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多光束入射驱动间接驱动黑腔的异形激光光斑

DOI：
10.1017/hpl.2017.17
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发表时间：
2017-08
期刊：
High Power Laser Science and Engineering
影响因子：
4.8
通讯作者：
Xiaofeng Wei
Xiaofeng Wei
中科院分区：
物理与天体物理1区
文献类型：
--
作者：
Ping Li;Sai Jin;Runchang Zhao;Wei Wang;Fuquan Li;Mingzhong Li;Jingqin Su;Xiaofeng Wei

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在间接驱动中，降低单束激光的峰值强度与控制多束激光的重叠度，是激光焦斑设计的两个相互矛盾的要求。本文介绍了一种基于激光在黑腔中传播几何结构的改进型间接驱动激光光斑设计技术。该技术能够生成合适的连续相位板（CPP），产生一种特殊形状的光斑，从而平衡这两个相互矛盾的要求。相应的连续相位板不会给设计和制造带来困难。相位像差对这种特殊形状的光斑更为敏感；不过，就目前的光束控制水平而言，这种敏感性是可以接受的。
In indirect drive, reducing peak intensity of a single beam and controlling overlap of multi-beams are two opposite requirements for laser focal spot design. In this paper, an improved laser spot design technique for indirect drive built upon the geometric structures of laser propagation into hohlraum has been introduced. The proposed technique is able to generate appropriate continuous phase plate (CPP) producing a special shaped spot that can balance the opposite requirements. The corresponding CPP does not bring difficulties to the design and fabrication. Phase aberrations are more sensitive to the special shaped spot; however, it can be tolerable for the current beam control level.
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DOI： 10.1103/physrevlett.102.025004
发表时间： 2009-01-16
期刊： PHYSICAL REVIEW LETTERS
影响因子： 8.6
作者：
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