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Title
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Novel vortex generator and mode converter for electron beams
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Author
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Abstract
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| A mode converter for electron vortex beams is described. Numerical simulations, confirmed by experiment, show that the converter transforms a vortex beam with a topological charge m = +/- 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 = +/- 1. This combination serves as a generator of electron vortex beams of high brilliance. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y.
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Publication
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New York, N.Y.
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2012
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ISSN
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0031-9007
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Volume/pages
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109
:8
(2012)
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Article Reference
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084801
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ISI
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000307790900004
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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