Diffraction and microscopy with attosecond electron pulse trains

Morimoto, Yuya; Baum, Peter

Diffraction and microscopy with attosecond electron pulse trains

Files

Morimoto_2-ct2lzpyprxx10.pdf(2.17 MB)

Date

2018

Authors

Morimoto, Yuya

Baum, Peter

EU project number

647771

Project

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

Collections

Physik

Publication type

Journal article

Publication status

Published

Published in

Nature Physics ; 14 (2018), 3. - pp. 252-256. - ISSN 1745-2473. - eISSN 1745-2481

Abstract

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.

Subject (DDC)

530 Physics

Cite This

ISO 690

MORIMOTO, Yuya, Peter BAUM, 2018. Diffraction and microscopy with attosecond electron pulse trains. In: Nature Physics. 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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Bibliography of Konstanz

Yes

Refereed

Yes