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arXiv · 1205.2329

A novel vortex generator and mode converter for electrons

Peter Schattschneider·Michael Stoeger-Pollach·Johan Verbeeck
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Abstract

A mode converter for electron vortex beams is described. Numerical simulations, confirmed by experiment, show that the converter transforms a vortex beam with topological charge $m=\pm 1$ into beams closely resembling Hermite-Gaussian HG$_{10}$ and HG$_{01}$ modes. The converter can be used as a mode discriminator or filter for electron vortex beams. Combining the converter with a phase plate turns a plane wave into modes with topological charge $m=\pm 1$. This combination serves as a generator of electron vortex beams of high brilliance.

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Peter Schattschneider, Michael Stoeger-Pollach, Johan Verbeeck. 2012-05-10. A novel vortex generator and mode converter for electrons. https://doi.org/10.1103/physrevlett.109.084801

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