Harmonic-enhanced high-gain harmonic generation for a high repetition rate free-electron laser
High-gain harmonic generation (HGHG) is effective to produce fully coherent free-electron laser (FEL) pulses for various scientific applications. Due to the limitation of seed lasers, HGHG typically operates at a low repetition rate. In this paper, a harmonic-enhanced HGHG scheme is proposed to rela...
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| Veröffentlicht in: | High power laser science and engineering 2022-01, Vol.10, Article e4 |
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| container_title | High power laser science and engineering |
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| creator | Zhao, Sheng Qin, Weilun Huang, Senlin |
| description | High-gain harmonic generation (HGHG) is effective to produce fully coherent free-electron laser (FEL) pulses for various scientific applications. Due to the limitation of seed lasers, HGHG typically operates at a low repetition rate. In this paper, a harmonic-enhanced HGHG scheme is proposed to relax the peak power requirement for the seed laser, which can therefore operate at megahertz and a higher repetition rate. Moreover, the setup of the scheme is compact and can be adopted in an existing single-stage HGHG facility to extend the shortest achievable wavelength. Simulations show that FEL emission at 13.5 nm (20th harmonic) can be obtained with a 270 nm, 1 MW (peak power) seed laser. |
| doi_str_mv | 10.1017/hpl.2021.58 |
| format | Article |
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| language | eng |
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| source | Cambridge Journals Open Access; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Electrons Energy Free electron lasers Harmonic generations High gain Lasers Radiation Repetition Simulation |
| title | Harmonic-enhanced high-gain harmonic generation for a high repetition rate free-electron laser |
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