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Multibeam optical pulse generation system based on time division multiplexing

Lin Hong-Huan Zhang Rui Deng Ying Li Ming-Zhong Zhou Shou-Huan Wang Jian-Jun Xu Dang-Peng

Multibeam optical pulse generation system based on time division multiplexing

Lin Hong-Huan, Zhang Rui, Deng Ying, Li Ming-Zhong, Zhou Shou-Huan, Wang Jian-Jun, Xu Dang-Peng
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  • Received Date:  24 December 2009
  • Accepted Date:  25 May 2010
  • Published Online:  05 June 2010

Multibeam optical pulse generation system based on time division multiplexing

  • 1. (1)Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China; (2)School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China; (3)School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China;Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

Abstract: By time division multiplexing (TDM) technique, an all-solid-state all-fiber multibeam optical pulse generation system used for an inertial confinement fusion driver is developed. The continuous wave signal is provided by a single longitudinal mode oscillator. The TDM technique and he high speed electro-optic modulation technique are utilized to realize the train pulse and arbitrary pulse-shaping. The polarization independent acoustooptic modulation technique is adopted to independently output the multibeam. Eight sub-pulses which may be shaped arbitrarily are included in each train pulse, and the time delay between adjacent sub-pulses is 120 ns. A single pulse selection module is used so that each beam turns into an independent output beam and then each beam is amplified and transmitted to output. Finally, it is successfully verified that the train pulse can be produced by the TDM technique, and its sub-pulse can be shaped arbitrarily and independently. The each beam energy is 1.275 μJ.

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