Full-coherent free electron laser seeded by 13th- and 15th-order harmonics of near-infrared femtosecond laser pulses
Full-coherent free electron laser seeded by 13th- and 15th-order harmonics of near-infrared femtosecond laser pulses
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DOI：
10.1088/0953-4075/46/16/164006
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发表时间：
2013-08
期刊：
影响因子：
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通讯作者：
T. Sato;A. Iwasaki;S. Owada;K. Yamanouchi;E. Takahashi;K. Midorikawa;M. Aoyama;K. Yamakawa;T. Togashi;K. Fukami;T. Hatsui;T. Hara;T. Kameshima;H. Kitamura;N. Kumagai;S. Matsubara;M. Nagasono;H. Ohashi;T. Ohshima;Y. Otake;T. Shintake;K. Tamasaku;H. Tanaka;T. Tanaka;K. Togawa;H. Tomizawa;T. Watanabe;M. Yabashi;T. Ishikawa
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文献类型：
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作者：
T. Sato;A. Iwasaki;S. Owada;K. Yamanouchi;E. Takahashi;K. Midorikawa;M. Aoyama;K. Yamakawa;T. Togashi;K. Fukami;T. Hatsui;T. Hara;T. Kameshima;H. Kitamura;N. Kumagai;S. Matsubara;M. Nagasono;H. Ohashi;T. Ohshima;Y. Otake;T. Shintake;K. Tamasaku;H. Tanaka;T. Tanaka;K. Togawa;H. Tomizawa;T. Watanabe;M. Yabashi;T. Ishikawa
将位于800 nm的13次(61.7 nm)和15次谐波(53.4 nm)的飞秒激光脉冲引入到RIKEN SCSS(春秋8号紧凑型SASE源)实验加速器的波荡器中，通过加速的电子束与谐波脉冲的相互作用，将这些谐波脉冲放大了102倍以上，获得了高对比度。通过对波荡器中高次谐波脉冲放大过程的数值模拟，研究了电子束束宽度与高次谐波脉冲相互作用的最佳条件，从而在极紫外区产生全相干强脉冲。
By introducing 13th- (61.7 nm) and 15th-order harmonics (53.4 nm) of femtosecond laser pulses at 800 nm into an undulator of SCSS (SPring-8 Compact SASE Source) test accelerator at RIKEN, these harmonic pulses were amplified by a factor of more than 102 with a high contrast ratio through the interaction between accelerated electron bunches and the harmonic pulses. From numerical simulations of the amplification processes of high-order harmonic pulses in the undulator, optimum conditions of the electron bunch duration interacting with the high-order harmonic pulses were investigated for generating full-coherent and intense pulses in the extreme ultraviolet wavelength region.