Improved temporal resolution in ultrafast electron diffraction measurements through THz compression and time-stamping.
Journal
Structural dynamics (Melville, N.Y.)
ISSN: 2329-7778
Titre abrégé: Struct Dyn
Pays: United States
ID NLM: 101660872
Informations de publication
Date de publication:
Mar 2024
Mar 2024
Historique:
received:
19
11
2023
accepted:
05
04
2024
medline:
24
4
2024
pubmed:
24
4
2024
entrez:
24
4
2024
Statut:
epublish
Résumé
We present an experimental demonstration of ultrafast electron diffraction (UED) with THz-driven electron bunch compression and time-stamping that enables UED probes with improved temporal resolution. Through THz-driven longitudinal bunch compression, a compression factor of approximately four is achieved. Moreover, the time-of-arrival jitter between the compressed electron bunch and a pump laser pulse is suppressed by a factor of three. Simultaneously, the THz interaction imparts a transverse spatiotemporal correlation on the electron distribution, which we utilize to further enhance the precision of time-resolved UED measurements. We use this technique to probe single-crystal gold nanofilms and reveal transient oscillations in the THz near fields with a temporal resolution down to 50 fs. These oscillations were previously beyond reach in the absence of THz compression and time-stamping.
Identifiants
pubmed: 38655563
doi: 10.1063/4.0000230
pii: 4.0000230
pmc: PMC11037933
doi:
Types de publication
Journal Article
Langues
eng
Pagination
024311Informations de copyright
© 2024 Author(s).
Déclaration de conflit d'intérêts
The authors have no conflicts to disclose.
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