title: Generation of isolated single attosecond hard X-ray pulse in enhanced self-amplified spontaneous emission scheme.
abstract: The generation of isolated attosecond hard x-ray pulse has been studied under the enhanced self-amplified spontaneous emission (ESASE) scheme with the density and energy modulation of an electron bunch. It is demonstrated in simulation that an isolated attosecond hard x-ray pulse of a high contrast ratio can be produced by adjusting a driver laser wavelength and the energy distribution of an electron bunch. An isolated attosecond pulse of ~146 attosecond full-width half-maximum (FWHM) at 0.1 nm wavelength is obtained with a saturation length of 34 meter for the electron beam parameters of Korean X-ray Free Electron laser.
authors.affiliation: Department of Physics, Pohang University of Science and Technology (POTECH), Pohang, 790-784, South Korea.
authors.forename: Sandeep
authors.initials: S
authors.lastname: Kumar
authors.forename: Heung-Sik
authors.initials: HS
authors.lastname: Kang
authors.forename: Dong Eon
authors.initials: DE
authors.lastname: Kim