Temporally-coherent terawatt attosecond XFEL synchronized with a few cycle laser

• DOI: 10.1038/srep37700
• Publication Date: 2016-11-28T15:40:57Z
• Authors: Sandeep Kumar; Yong Woon Parc; Alexandra S. Land...; Dong Eon Kim
• Keywords: Attosecond; Free-electron laser; Pulse duration

Abstract Attosecond metrology using laser-based high-order harmonics has been significantly advanced and applied to various studies of electron dynamics in atoms, molecules solids. Laser-based have a limitation low power photon energies. There is, however, great demand for even higher energy. Here, we propose scheme terawatt attosecond (TW-as) X-ray pulse free-electron laser controlled by few cycle IR pulse, where one dominant current spike an bunch is used repeatedly amplify seeded radiation level. This relatively simple, compact, straightforward, also produces temporally spectrally clean pulse. The viability this demonstrated simulations Pohang accelerator laboratory (PAL)-XFEL beam parameters.