Optical polarization analogue in free electron beams

  title={Optical polarization analogue in free electron beams},
  author={H. Lourenço-Martins and D. G'erard and M. Kociak},
  journal={arXiv: Optics},
Fast electrons spectromicroscopies enable to measure quantitatively the optical response of excitations with unrivaled spatial resolution. However, due to their inherently scalar nature, electron waves cannot access to polarization-related quantities. In spite of promising attempts based on the conversion of concepts originating from singular optics (such as vortex beams), the definition of an optical polarization analogue for fast electrons has remained a dead letter. Here, we establish such… Expand
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