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Towards a holographic approach to spherical aberration correction in scanning transmission electron microscopy

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arxiv 1705.04903 v2 pith:LNJVSM3Z submitted 2017-05-14 physics.ins-det physics.optics

Vincenzo Grillo , Amir H. Tavabi , Emrah Yucelen , Peng-Han Lu , Federico Venturi , Hugo Larocque , Lei Jin , Aleksei Savenko
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Gian Carlo Gazzadi Roberto Balboni Stefano Frabboni Peter Tiemeijer Rafal E. Dunin-Borkowski Ebrahim Karimi
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classification physics.ins-detphysics.optics
keywords electronaberrationcorrectionsphericalapproachholographicphasescanning
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Recent progress in phase modulation using nanofabricated electron holograms has demonstrated how the phase of an electron beam can be controlled. In this paper, we apply this concept to the correction of spherical aberration in a scanning transmission electron microscope and demonstrate an improvement in spatial resolution. Such a holographic approach to spherical aberration correction is advantageous for its simplicity and cost-effectiveness.

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