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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 6 — Mar. 15, 2013
  • pp: 821–823

Validity of the paraxial approximation for electron acceleration with radially polarized laser beams

Vincent Marceau, Charles Varin, and Michel Piché  »View Author Affiliations

Optics Letters, Vol. 38, Issue 6, pp. 821-823 (2013)

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In the study of laser-driven electron acceleration, it has become customary to work within the framework of paraxial wave optics. Using an exact solution to the Helmholtz equation as well as its paraxial counterpart, we perform numerical simulations of electron acceleration with a high-power TM01 beam. For beam waist sizes at which the paraxial approximation was previously recognized valid, we highlight significant differences in the angular divergence and energy distribution of the electron bunches produced by the exact and the paraxial solutions. Our results demonstrate that extra care has to be taken when working under the paraxial approximation in the context of electron acceleration with radially polarized laser beams.

© 2013 Optical Society of America

OCIS Codes
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7120) Ultrafast optics : Ultrafast phenomena
(350.4990) Other areas of optics : Particles
(020.2649) Atomic and molecular physics : Strong field laser physics

ToC Category:
Ultrafast Optics

Original Manuscript: January 16, 2013
Revised Manuscript: February 8, 2013
Manuscript Accepted: February 8, 2013
Published: March 5, 2013

Vincent Marceau, Charles Varin, and Michel Piché, "Validity of the paraxial approximation for electron acceleration with radially polarized laser beams," Opt. Lett. 38, 821-823 (2013)

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