We propose an improved type of holographic-plate suitable for the shaping of electron beams. The plate is fabricated by a focused ion beam on a silicon nitride membrane and introduces a controllable phase shift to the electron wavefunction. We adopted the optimal blazed-profile design for the phase hologram, which results in the generation of highly efficient (25%) electron vortex beams. This approach paves the route towards applications in nano-scale imaging and materials science.

Highly efficient electron vortex beams generated by nanofabricated phase holograms / Vincenzo, Grillo; Gian Carlo, Gazzadi; Ebrahim, Karimi; Mafakheribashmagh, Erfan; Robert W., Boyd; Frabboni, Stefano. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 104:4(2014), pp. 043109-1-043109-4. [10.1063/1.4863564]

Highly efficient electron vortex beams generated by nanofabricated phase holograms

MAFAKHERIBASHMAGH, ERFAN;FRABBONI, Stefano
2014

Abstract

We propose an improved type of holographic-plate suitable for the shaping of electron beams. The plate is fabricated by a focused ion beam on a silicon nitride membrane and introduces a controllable phase shift to the electron wavefunction. We adopted the optimal blazed-profile design for the phase hologram, which results in the generation of highly efficient (25%) electron vortex beams. This approach paves the route towards applications in nano-scale imaging and materials science.
2014
104
4
043109-1
043109-4
Highly efficient electron vortex beams generated by nanofabricated phase holograms / Vincenzo, Grillo; Gian Carlo, Gazzadi; Ebrahim, Karimi; Mafakheribashmagh, Erfan; Robert W., Boyd; Frabboni, Stefano. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 104:4(2014), pp. 043109-1-043109-4. [10.1063/1.4863564]
Vincenzo, Grillo; Gian Carlo, Gazzadi; Ebrahim, Karimi; Mafakheribashmagh, Erfan; Robert W., Boyd; Frabboni, Stefano
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1010739
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