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Laser time fiducial for precise physical experiment in Shenguang-Ⅲ prototype facility

Lin Hong-Huan Jiang Dong-Bin Wang Jian-Jun Li Ming-Zhong Zhang Rui Deng Ying Xu Dang-Peng Dang Zhao

Laser time fiducial for precise physical experiment in Shenguang-Ⅲ prototype facility

Lin Hong-Huan, Jiang Dong-Bin, Wang Jian-Jun, Li Ming-Zhong, Zhang Rui, Deng Ying, Xu Dang-Peng, Dang Zhao
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  • Received Date:  16 March 2009
  • Accepted Date:  24 March 2010
  • Published Online:  15 February 2011

Laser time fiducial for precise physical experiment in Shenguang-Ⅲ prototype facility

  • 1. Research Center of Laser Fusion, China Academy of Engineering Physis, Mianyang 621900, China

Abstract: Using comb laser pulses synchronized with the main pulse output by large laser facility as time fiducial to scale the reaction process between high power laser pulse and target is very important for the realization of precise measurement and simulation in the intense field experiment. We demonstrate a fiber multiharmonic time fiducial laser pulse generation system using optic-electric modulation and optical pulse stacking. A unit optical pulse with a width of 150 ps generated by modulation was stacked in a fiber stacker to form a 1053 nm comb pulse. The pulse was then amplified and frequency-converted to generate green (527 nm) and UV (351 nm) fiducials. The system can stably provide Shenguang-Ⅲ prototype facility with multi-frequency laser time fiducials which is essential for the precise physical experiment. In addition, the system is highly adaptive since it can generate fiducial signals with variable pulse intervals and amplitudes flexibly according to the requirements of different physical experiments.

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