• High Power Laser Science and Engineering
  • Vol. 8, Issue 4, 04000e36 (2020)
Markus Büscher1、2、*, Anna Hützen1、2, Liangliang Ji3、4、*, and Andreas Lehrach5、6
Author Affiliations
  • 1Peter Grünberg Institut (PGI-6), Forschungszentrum Jülich, Jülich, Germany
  • 2Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
  • 3State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, China
  • 4CAS Center for Excellence in Ultra-intense Laser Science, Shanghai201800, China
  • 5JARA-FAME (Forces and Matter Experiments), Forschungszentrum Jülich and RWTH Aachen University, Aachen, Germany
  • 6Institut für Kernphysik (IKP-4), Forschungszentrum Jülich, Jülich, Germany
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    Abstract

    The acceleration of polarized electrons, positrons, protons and ions in strong laser and plasma fields is a very attractive option for obtaining polarized beams in the multi-mega-electron volt range. Recently, there has been substantial progress in the understanding of the dominant mechanisms leading to high degrees of polarization, in the numerical modeling of these processes and in their experimental implementation. This review paper presents an overview on the current state of the field, and on the concepts of polarized laser–plasma accelerators and of beam polarimetry.

    1 The need for polarized beams

    Scenario of the generation of spin-polarized electron beams via nonlinear Compton scattering: a relativistic electron bunch generated by laser-wakefield acceleration collides head-on with an elliptically polarized laser pulse and splits along the propagation direction into two parts with opposite transverse polarization[34]. OAP, optical parametric amplification.

    Figure 1.Scenario of the generation of spin-polarized electron beams via nonlinear Compton scattering: a relativistic electron bunch generated by laser-wakefield acceleration collides head-on with an elliptically polarized laser pulse and splits along the propagation direction into two parts with opposite transverse polarization[34]. OAP, optical parametric amplification.