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Title
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Exploiting lens aberrations to create electron-vortex beams
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Author
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Abstract
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| A model for a new electron-vortex beam production method is proposed and experimentally demonstrated. The technique calls on the controlled manipulation of the degrees of freedom of the lens aberrations to achieve a helical phase front. These degrees of freedom are accessible by using the corrector lenses of a transmission electron microscope. The vortex beam is produced through a particular alignment of these lenses into a specifically designed astigmatic state and applying an annular aperture in the condenser plane. Experimental results are found to be in good agreement with simulations. |
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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., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
,
2013
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ISSN
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0031-9007
[print]
1079-7114
[online]
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DOI
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10.1103/PHYSREVLETT.111.064801
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Volume/pages
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111
:6
(2013)
, p. 1-5
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Article Reference
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064801
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ISI
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000322921200009
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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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