Femtosecond streaking of electron diffraction patterns to study structural dynamics in crystalline matter

Eichberger, Maximilian; Erasmus, Nicolas; Haupt, Kerstin; Kassier, Günther; von Flotow, Andrea; Demsar, Jure; Schwoerer, Heinrich

Femtosecond streaking of electron diffraction patterns to study structural dynamics in crystalline matter

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Zu diesem Dokument gibt es keine Dateien.

Datum

2013

Autor:innen

Eichberger, Maximilian

Erasmus, Nicolas

Haupt, Kerstin

Kassier, Günther

von Flotow, Andrea

Demsar, Jure

Schwoerer, Heinrich

DOI (zitierfähiger Link)

https://doi.org/10.1063/1.4798518

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Applied Physics Letters. 2013, 102(12), 121106. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.4798518

Zusammenfassung

A table-top femtosecond, non-relativistic, electron diffraction setup is combined with a low-jitter, photo-triggered streak camera to follow the optically induced structural dynamics in complex solids. A temporal resolution of 550 fs is experimentally demonstrated, while the route to streaking with sub-250 fs temporal resolution is outlined. The streaking technique allows for parallel capturing of temporal information as opposed to the serial data acquisition in a conventional scanning femtosecond electron diffraction. Moreover, its temporal resolution is not corrupted by increasing the number of electrons per pulse. Thus, compared to the conventional scanning approach, a substantial increase in signal-to-noise ratio (SNR) can be achieved. These benefits are demonstrated by studying a photo-induced charge density wave phase transition in 4H_b-TaSe₂ using both methods. Within the same data acquisition time a three-fold increase in SNR is achieved when compared to the scanning method, with ways for a further improvement outlined.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

EICHBERGER, Maximilian, Nicolas ERASMUS, Kerstin HAUPT, Günther KASSIER, Andrea VON FLOTOW, Jure DEMSAR, Heinrich SCHWOERER, 2013. Femtosecond streaking of electron diffraction patterns to study structural dynamics in crystalline matter. In: Applied Physics Letters. 2013, 102(12), 121106. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.4798518

BibTex

@article{Eichberger2013-03-25Femto-41892,
  year={2013},
  doi={10.1063/1.4798518},
  title={Femtosecond streaking of electron diffraction patterns to study structural dynamics in crystalline matter},
  number={12},
  volume={102},
  issn={0003-6951},
  journal={Applied Physics Letters},
  author={Eichberger, Maximilian and Erasmus, Nicolas and Haupt, Kerstin and Kassier, Günther and von Flotow, Andrea and Demsar, Jure and Schwoerer, Heinrich},
  note={Article Number: 121106}
}

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