Ultrafast Transverse Modulation of Free Electrons by Interaction with Shaped Optical Fields | Zendy

Ivan Madan | Zendy; Veronica Leccese | Zendy; Adam Mazur | Zendy; Francesco Barantani | Zendy; Thomas LaGrange | Zendy; Alexey Sapozhnik | Zendy; Phoebe Tengdin | Zendy; Simone Gargiulo | Zendy; Enzo Rotunno | Zendy; Jean-Christophe Olaya | Zendy; Ido Kaminer | Zendy; Vincenzo Grillo | Zendy; F. Javier Garcı́a de Abajo | Zendy; Fabrizio Carbone | Zendy; Giovanni Maria Vanacore | Zendy

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Ultrafast Transverse Modulation of Free Electrons by Interaction with Shaped Optical Fields

Author(s) -

Ivan Madan,

Veronica Leccese,

Adam Mazur,

Francesco Barantani,

Thomas LaGrange,

Alexey Sapozhnik,

Phoebe Tengdin,

Simone Gargiulo,

Enzo Rotunno,

Jean-Christophe Olaya,

Ido Kaminer,

Vincenzo Grillo,

F. Javier Garcı́a de Abajo,

Fabrizio Carbone,

Giovanni Maria Vanacore

Publication year - 2022

Publication title -

acs photonics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.735

H-Index - 89

ISSN - 2330-4022

DOI - 10.1021/acsphotonics.2c00850

Subject(s) - spatial light modulator , ultrashort pulse , optics , physics , electron , modulation (music) , free electron model , transverse plane , electron optics , optical modulator , cathode ray , phase modulation , laser , quantum mechanics , acoustics , phase noise , engineering , structural engineering

Spatiotemporal electron-beam shaping is a bold frontier of electron microscopy. Over the past decade, shaping methods evolved from static phase plates to low-speed electrostatic and magnetostatic displays. Recently, a swift change of paradigm utilizing light to control free electrons has emerged. Here, we experimentally demonstrate arbitrary transverse modulation of electron beams without complicated electron-optics elements or material nanostructures, but rather using shaped light beams. On-demand spatial modulation of electron wavepackets is obtained via inelastic interaction with transversely shaped ultrafast light fields controlled by an external spatial light modulator. We illustrate this method for the cases of Hermite-Gaussian and Laguerre-Gaussian modulation and discuss their use in enhancing microscope sensitivity. Our approach dramatically widens the range of patterns that can be imprinted on the electron profile and greatly facilitates tailored electron-beam shaping.

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