Numerical study of laser wake field generated by two colliding laser beams.

Abstract

The laser wake field generated by two colliding laser beams has been studied numerically. The wake field amplitude is enhanced by a counterpropagating long pulse laser, which has an appropriate frequency difference, and becomes an order of magnitude larger than that of the standard wake field. The field amplitude increases in proportion to the pumping laser intensities until it saturates under the wave breaking limit. The details of the enhanced wake field have been examined at the saturated state.