Enhanced high-gain harmonic generation for x-ray free-electron laser

Journal Article · Mon Oct 06 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2993179· OSTI ID:21175635

Qika, Jia ^[1]

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1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029 (China)

The harmonic generation free-electron laser (HG-FEL) is capable of producing temporally and spatially coherent pulses in the vacuum ultraviolet and shorter wavelength regions. In this letter an easy-to-implement scheme that significantly enhances the performance of HG-FEL and extends its short-wavelength range is proposed. By adding a short phase-reversed modulator after the dispersive section, the electron energy spread is reduced and simultaneously the electron microbunching is enhanced. Three-dimensional simulations demonstrate the energy spread reduction and the bunching enhancement and show that more powerful higher harmonic radiation can be obtained.

• OSTI ID: 21175635
• Journal Information: Applied Physics Letters, Vol. 93, Issue 14; Other Information: DOI: 10.1063/1.2993179; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRONS
FREE ELECTRON LASERS
HARMONIC GENERATION
PERFORMANCE
PULSES
SIMULATION
ULTRAVIOLET RADIATION
WAVELENGTHS
X-RAY LASERS