title: Ponderomotive acceleration of electrons by a tightly focused intense laser beam.
abstract: Ponderomotive force driven acceleration of an electron at the focus of a high-intensity short-pulse laser is considered. Accounting for the asymmetry of acceleration and deceleration due to the evolution of the Gaussian laser beam waist, the energized electron is extracted from the laser pulse by the longitudinal ponderomotive force. It is shown that an electron's energy gain in the range of MeV can be realized for laser intensities above 10(19) W microm(2)/cm(2). Final energy gain as a function of the scattering angle and the electron's initial position has also been discussed.
authors.affiliation: Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800, People's Republic of China. fhe@siom.ac.cn
authors.forename: Feng
authors.initials: F
authors.lastname: He
authors.forename: Wei
authors.initials: W
authors.lastname: Yu
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu
authors.forename: Han
authors.initials: H
authors.lastname: Xu
authors.forename: Liejia
authors.initials: L
authors.lastname: Qian
authors.forename: Baifei
authors.initials: B
authors.lastname: Shen
authors.forename: Xiao
authors.initials: X
authors.lastname: Yuan
authors.forename: Ruxin
authors.initials: R
authors.lastname: Li
authors.forename: Zhizhan
authors.initials: Z
authors.lastname: Xu