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Integrated all fiber optical pulse generation system for laser fusion driver

Chen Guang-Hui Lin Hong-Huan Wang Jian-Jun Sui Zhan Li Ming-Zhong Ding Lei Tang Jun Deng Qing-Hua Luo Yi-Ming Dong Yi-Fang Li Feng

Integrated all fiber optical pulse generation system for laser fusion driver

Chen Guang-Hui, Lin Hong-Huan, Wang Jian-Jun, Sui Zhan, Li Ming-Zhong, Ding Lei, Tang Jun, Deng Qing-Hua, Luo Yi-Ming, Dong Yi-Fang, Li Feng
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  • Abstract views:  3253
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  • Received Date:  15 April 2007
  • Accepted Date:  05 July 2007
  • Published Online:  20 March 2008

Integrated all fiber optical pulse generation system for laser fusion driver

  • 1. (1)中电集团第23研究所,上海 200437; (2)中国工程物理研究院激光聚变研究中心,绵阳 621900; (3)中国科学技术大学物理系,合肥 230026

Abstract: We demonstrate an integrated all fiber optical pulse generation system for laser fusion driver. CW laser signal generated from a single longitudinal fiber oscillator was modulated by phase modulator and amplitude modulator to form an optical pulse with shaped waveform and bandwidth of 0.1 nm. The pulse was amplified and split by fiber multiplexer to four pulses. Time delay of each pulse was controlled by synchronization unit and power of each pulse was adjusted by programmable variable optical attenuator. The four pulses were amplified and then transmitted through a 150 m fiber to the pre-amplify system. The fiber system can generate almost arbitrarily shaped optical pulse with duration of 0.2—20 ns, bandwidth of 0.1 nm and power of several nJ. As the front-end of the SG-Ⅲ prototype facility, it has successfully lunched about 2.6 million shots of pulses. The fiber system is compact and highly stable and reliable.

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