Generation of a few femtoseconds pulses in seeded FELs using a seed laser with small transverse size

Generation of a few femtoseconds pulses in seeded FELs using a seed laser with small transverse size
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使用横向尺寸较小的种子激光器在种子 FEL 中生成几个飞秒脉冲

DOI:
10.1016/j.nima.2016.05.122
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发表时间:
2016-09
影响因子:
1.4
通讯作者:
Jia Qika
Jia Qika
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Li Heting;Jia Qika

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We propose a simple method to generate a few femtosecond pulses in seeded FELs. We use a longitudinal energy-chirped electron beam passing through a dogleg where transverse dispersion will generate a horizontal energy chirp, then in the modulator, a seed laser with narrow beam radius will only modulate the center portion of the electron beam and then short pulses at high harmonics will be generated in the radiator. Using a representative realistic set of parameters, we show that 30 nm XUV pulse based on the HGHG scheme and 9 nm soft x-ray pulse based on the EEHG scheme with duration of about 8 fs (FWHM) and peak power of GW level can be generated from a 180 nm UV seed laser with beam waist of 75 μm. This new scheme can provide an optional operation mode for the existing seeded FEL facilities to meet the requirement of short-pulse FEL.
DOI: 10.1103/physrevlett.102.074801
发表时间: 2009-02-20
影响因子: 8.6
作者:
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通讯作者: Stupakov, G.
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DOI: 10.1016/j.nima.2010.06.099
发表时间: 2010-09
期刊: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子: --
作者:
Yan, Jun;Deng, Hai-Xiao;Wang, Dong;Dai, Zhi-Min
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