title: Vacuum electron acceleration and bunch compression by a flat-top laser beam.
abstract: The field intensity distribution and phase velocity characteristics of a flat-top laser beam are analyzed and discussed. The dynamics of electron acceleration in this kind of beam are investigated using three-dimensional test particle simulations. Compared with the standard (i.e., TEM(00) mode) Gaussian beam, a flat-top laser beam has a stronger longitudinal electric field and a larger diffraction angle. These characteristics make it easier for electrons to be trapped and accelerated by the beam. With a flat-top shape, the laser beam is also applicable to the acceleration of low energy electron and bunch compression.
authors: Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai, 200433, China.
authors: W
authors: W
authors: Wang
authors: P X
authors: PX
authors: Wang
authors: Y K
authors: YK
authors: Ho
authors: Q
authors: Q
authors: Kong
authors: Y
authors: Y
authors: Gu
authors: S J
authors: SJ
authors: Wang