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Proceedings Paper

A unidirectional two-pulse amplifying architecture for laser fusion facilities
Author(s): Min Li; Xiaomin Zhang; Wenyi Wang; Zhenguo Wang; Xiongwei Yan; Xinying Jiang; Jiangang Zheng; Mingzhong Li
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Paper Abstract

A unidirectional two-pulse amplifying architecture (UTPA) was proposed to amplify the laser pulses in inertial confinement fusion and fusion energy facilities. Compared with laser output performance in the conventional single pulse amplifier (SPA), the preliminary results show that although the performance in SPA and UTPA with the gain media of Yb:YAG operating at 200K are almost equal with output energies of 8.12 kJ and 8.26 kJ, and extraction efficiencies of 79.5% and 81.4%, respectively; however, at the maximum output in SPA, ΣB increases up to 3.499 rad close to the limitation of 3.5 rad, while in UTPA ΣB is relative small with the value of 1.769 rad, which reduces the nonlinear effects for high power pulses and is beneficial to system reliability and stability. In addition, for achieving a pulse with squared temporal shape, the demands for the pre-shaping ability of the laser system were significantly reduced in UTPA by around 6 times. With ΣB margins in UPTA, it is possible to scale the output performance with high extraction efficiency by increasing the gain coefficient or the slaps.

Paper Details

Date Published: 26 January 2016
PDF: 6 pages
Proc. SPIE 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015, 97962D (26 January 2016); doi: 10.1117/12.2228531
Show Author Affiliations
Min Li, China Academy of Engineering Physics (China)
Xiaomin Zhang, China Academy of Engineering Physics (China)
Wenyi Wang, China Academy of Engineering Physics (China)
Zhenguo Wang, China Academy of Engineering Physics (China)
Xiongwei Yan, China Academy of Engineering Physics (China)
Xinying Jiang, China Academy of Engineering Physics (China)
Jiangang Zheng, China Academy of Engineering Physics (China)
Mingzhong Li, China Academy of Engineering Physics (China)


Published in SPIE Proceedings Vol. 9796:
Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015
Weimin Bao; Yueguang Lv, Editor(s)

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