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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. : 2012
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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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E-only publicatie
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| Full text (Publisher's DOI) |
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| Full text (open access) |
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