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Off-axis eight-pass neodymium glass laser amplifier with high efficiency and excellent energy stability

机译：轴轴八遍钕玻璃激光放大器，具有高效率和优异的能量稳定性

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摘要

A new relay-imaged off-axial eight-pass laser amplifier with several joules energy and 1 Hz repetition rate was demonstrated. The extraction efficiency and pulse-to-pulse energy stability were greatly improved. Under the single-pass small-signal gain of 3.6, a net gain of 900 and an effective extraction efficiency of 42.4% in the beam aperture were realized. Pulse-to-pulse energy stability of 0.83% (peak-valley) and 0.17% (root-mean-square) was achieved by the significant saturation of eight-pass amplification, which, to the best of our knowledge, is the best energy stability in several-joules-class amplifiers. The far-field quality was 2.52 times the diffraction limit, and the near-field modulation of the 90% beam aperture was 1.28. No parasitic oscillations or pencil beams were observed. Moreover, another key feature of the proposed amplifier was the ability to remarkably improve the pulse contrast with a unique design. (C) 2018 Optical Society of America
机译：展示了一种具有多个焦点能量和1 Hz重复率的新的继电器偏离轴向八通激光放大器。 提取效率和脉冲到脉冲能量稳定性大大提高。 在3.6的单通小信号增益下，实现了净增益900的净增益和光束孔中的有效提取效率为42.4％。 通过八次通过扩增的显着饱和度实现脉冲到脉冲能量稳定性为0.83％（峰值）和0.17％（根均匀平方），这是我们的知识，这是最好的能量 几焦仁级放大器中的稳定性。 远场质量为衍射极限的2.52倍，90％光束孔径的近场调制为1.28。 没有观察到寄生振荡或铅笔梁。 此外，所提出的放大器的另一个关键特征是能够显着提高脉冲对比度与独特的设计。 （c）2018年光学学会

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  • 来源
    《Applied optics》 |2018年第29期|共6页
  • 作者

    Yao Ke; Gao Song; Tang Jun; Xie Xudong; Fan Chen; Lu Zhenhua; Fu XueJun; Fan Mengqiu; Tian Xiaocheng; Zhang Bo; Sun Xibo; Xu Dangpeng; Zheng Kuixing; Liu Lanqin; Peng Zhitao; Su Jingqin;

  • 作者单位

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus POB 919-988 Mianyang 621900 Peoples R China;

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  • 正文语种 eng
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