Diffraction and microscopy with attosecond electron pulse trains

Morimoto, Yuya; Baum, Peter

Diffraction and microscopy with attosecond electron pulse trains

Dateien

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Datum

2018

Autor:innen

Morimoto, Yuya

Baum, Peter

Angaben zur Forschungsförderung

European Union (EU): 647771

Projekt

Direct Visualization of Light-Driven Atomic-Scale Carrier Dynamics in Space and Time DIVI

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Nature Physics. 2018, 14(3), pp. 252-256. ISSN 1745-2473. eISSN 1745-2481. Available under: doi: 10.1038/s41567-017-0007-6

Zusammenfassung

Attosecond spectroscopy^1–7 can resolve electronic processes directly in time, but a movie-like space–time recording is impeded by the too long wavelength (~100 times larger than atomic distances) or the source–sample entanglement in re-collision techniques^8–11. Here we advance attosecond metrology to picometre wavelength and sub-atomic resolution by using free-space electrons instead of higher-harmonic photons^1–7 or re-colliding wavepackets^8–11. A beam of 70-keV electrons at 4.5-pm de Broglie wavelength is modulated by the electric field of laser cycles into a sequence of electron pulses with sub-optical-cycle duration. Time-resolved diffraction from crystalline silicon reveals a < 10-as delay of Bragg emission and demonstrates the possibility of analytic attosecond–ångström diffraction. Real-space electron microscopy visualizes with sub-light-cycle resolution how an optical wave propagates in space and time. This unification of attosecond science with electron microscopy and diffraction enables space–time imaging of light-driven processes in the entire range of sample morphologies that electron microscopy can access.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

MORIMOTO, Yuya, Peter BAUM, 2018. Diffraction and microscopy with attosecond electron pulse trains. In: Nature Physics. 2018, 14(3), pp. 252-256. ISSN 1745-2473. eISSN 1745-2481. Available under: doi: 10.1038/s41567-017-0007-6

BibTex

@article{Morimoto2018-03Diffr-43225,
  year={2018},
  doi={10.1038/s41567-017-0007-6},
  title={Diffraction and microscopy with attosecond electron pulse trains},
  number={3},
  volume={14},
  issn={1745-2473},
  journal={Nature Physics},
  pages={252--256},
  author={Morimoto, Yuya and Baum, Peter}
}

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