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arXiv 0802.4159physics.opticsphysics.acc-ph
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自由电子激光放大器的锁模

Mode-Locking in a Free-Electron Laser Amplifier

N. R. Thompson, B. W. J. McNeil

摘要:

提出了一种利用自由电子激光放大器产生阿秒辐射脉冲串的技术。无光学技术通过在自由电子激光中的共传播辐射和电子聚束之间施加一系列时空位移来合成纵模梳。可以通过以模式间隔频率调制电子束能量来锁相模式。三维模拟表明,产生的训练的400作为脉冲在千兆瓦的功率水平均匀间隔2.5 fs的波长为124埃。在波长为1.5埃的X射线中,预测了23as脉冲序列,脉冲间隔为150as,峰值功率可达6GW。

英文摘要:

A technique is proposed to generate attosecond pulse trains of radiation from a Free-Electron Laser amplifier. The optics-free technique synthesises a comb of longitudinal modes by applying a series of spatio-temporal shifts between the co-propagating radiation and electron bunch in the FEL. The modes may be phase-locked by modulating the electron beam energy at the mode spacing frequency. Three-dimensional simulations demonstrate the generation of a train of 400as pulses at giga-watt power levels evenly spaced by 2.5fs at a wavelength of 124 Angstrom. In the X-ray at wavelength 1.5 Angstrom, trains of 23as pulses evenly spaced by 150as and of peak power up to 6GW are predicted.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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