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

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Abstract

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:10.1017/hpl.2017.17

基金项目:This work was supported by the National Nature Science Foundation of China (No. 11404306) and the Presidential Foundation of the Chinese Academy of Engineering Physics (No. YZJJLX2016008).

收稿日期:2017-03-11

录用日期:2017-05-04

网络出版日期:2017-05-11

作者单位    点击查看

Ping Li:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China
Sai Jin:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China
Runchang Zhao:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China
Wei Wang:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China
Fuquan Li:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China
Mingzhong Li:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China
Jingqin Su:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China
Xiaofeng Wei:Research Center of Laser Fusion of China Academy of Engineering Physics, 919-988 mail-box, Mianyang, SiChuan, 621900, PR China

联系人作者:Xiaofeng Wei(xfwei@caep.cn)

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引用该论文

Ping Li, Sai Jin, Runchang Zhao, Wei Wang, Fuquan Li, Mingzhong Li, Jingqin Su, and Xiaofeng Wei, "The special shaped laser spot for driving indirect-drive hohlraum with multi-beam incidence," High Power Laser Science and Engineering 5(3), e20 (2017)

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