Fully coherent hard X-ray generation by two-stage phase-merging enhanced harmonic generation

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Guang-Lei Wang, Wei-Qing Zhang, Xue-Ming Yang, Chao Feng and Hai-Xiao Deng. Fully coherent hard X-ray generation by two-stage phase-merging enhanced harmonic generation[J]. Chinese Physics C, 2016, 40(9): 098101. doi: 10.1088/1674-1137/40/9/098101
Guang-Lei Wang, Wei-Qing Zhang, Xue-Ming Yang, Chao Feng and Hai-Xiao Deng. Fully coherent hard X-ray generation by two-stage phase-merging enhanced harmonic generation[J]. Chinese Physics C, 2016, 40(9): 098101.  doi: 10.1088/1674-1137/40/9/098101 shu
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Received: 2016-02-24
Revised: 2016-04-29
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    Supported by the National Natural Science Foundation of China (21127902 11322550) and Ten Thousand Talent Program

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Fully coherent hard X-ray generation by two-stage phase-merging enhanced harmonic generation

    Corresponding author: Hai-Xiao Deng,
Fund Project:  Supported by the National Natural Science Foundation of China (21127902 11322550) and Ten Thousand Talent Program

Abstract: Cascading stages of seeded free electron lasers (FELs) is a promising way to produce fully coherent X-ray radiation. We study a new approach to produce coherent hard X-rays by cascading the recently proposed phase-merging enhanced harmonic generation (PEHG) The scheme consists of one dogleg and two PEHG configurations, and may be one of the leading candidates for the extracted undulator branch in future X-ray FEL facilities. FEL physics studies show that such a scheme is feasible within the present technology and can provide high brightness X-ray radiation pulses with narrow bandwidth and full coherence The radiated peak power at 1 Å wavelength converted from an initial 200 nm seed laser is over 2 GW.

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