Effect of a Higher-Order-Corrected Chirped Gaussian Laser Beam on the Electron Acceleration in Vacuum

Abstract

For a tightly focused laser, the beam-waist radius is of the same order as the wavelength and the lower-order-corrected Gaussian pulse description satisfies Maxwell&apos;s equations less accurately, so it, becomes necessary to include all the field components that arise from the tight focusing of the laser so as to satisfy Maxwell&apos;s equations more accurately. The effect of the seventh-order-corrected chirped Gaussian laser beam on the electron acceleration in vacuum is investigated. A numerical simulation shows that an electron maximum energy gain on the order of giga-electron volts (GeV) can be expected in the beam-waist region 45 <= k(0)w(0) <= 60, where k(0) is the laser wave number and w(0) is the laser-beam&apos;s waist size at the focal point of the beam.