Abstract
This scheme involves pairs of intersecting linearly-polarized Gaussian-profile laser beams that are focused at crossover in vacuum and phased such that transverse field components cancel. The E z components accelerate properly-phased z-axis relativistic electrons throughout a half-wave slip distance centered at crossover. The slip length is approximately 90λ for the case considered. The E z components vanish rapidly before and after this slip region, thus providing conditions for a special case that is not included in Palmer's general acceleration theorem. Electron energy-gain gradients of several GeV/m appear to be possible.
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