title: Generating intense fully coherent soft x-ray radiation based on a laser-plasma accelerator.
abstract: Laser-plasma based accelerator has the potential to dramatically reduce the size and cost of future x-ray light sources to the university-laboratory scale. However, the large energy spread of the laser-plasma accelerated electron beam may hinder the way for short wavelength free-electron laser generation. In this paper, we propose a novel method for directly imprinting strong coherent micro-bunching on the electron beam with large intrinsic energy spread by using a wavefront-tilted conventional optical laser beam and a weak dipole magnet. Theoretical analysis and numerical simulations demonstrate that this technique can be used for the generation of fully coherent femtosecond soft x-ray radiation at gigawatts level with a very short undulator.
authors.forename: Chao
authors.initials: C
authors.lastname: Feng
authors.forename: Dao
authors.initials: D
authors.lastname: Xiang
authors.forename: Haixiao
authors.initials: H
authors.lastname: Deng
authors.forename: Dazhang
authors.initials: D
authors.lastname: Huang
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.forename: Zhentang
authors.initials: Z
authors.lastname: Zhao