Quasi-static transverse electric field driven electron acceleration in relativistic laser matter interaction
arXiv:2607.26252
The paper demonstrates that a quasi‑static transverse electric field, aligned with the laser polarization plane, can reduce dephasing and boost energy gain in laser‑driven relativistic electron beams, and proposes a two‑laser configuration to realize this effect.
Abstract
Achieving significant energy gain in laser-driven relativistic electron beams remains challenging due to dephasing between the accelerating laser field and the electrons. We show that transverse electric fields, when aligned with the plane of laser polarization, can mitigate dephasing and enable substantial energy gain without compromising beam directionality. As a practical realization, we propose a two-laser scheme in which one laser generates the transverse field while the other drives electron acceleration. By tailoring the interaction geometry, this configuration sustains phase locking, enhances energy transfer, and opens a pathway toward compact, high-efficiency electron accelerators.