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Title: Femtosecond time-resolved MeV electron diffraction

Journal Article · · New Journal of Physics
 [1];  [2];  [2];  [2];  [3];  [4];  [4];  [4];  [2];  [2];  [2];  [2];  [5]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Shanghai Jiao Tong Univ., Shanghai (People's Republic of China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Florida State Univ., Tallahassee, FL (United States)
  4. IFW, Dresden (Germany)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States); Shanghai Jiao Tong Univ., Shanghai (People's Republic of China); SLAC National Accelerator Lab., Menlo Park, CA (United States)

We report the experimental demonstration of femtosecond electron diffraction using high-brightness MeV electron beams. High-quality, single-shot electron diffraction patterns for both polycrystalline aluminum and single-crystal 1T-TaS2 are obtained utilizing a 5 fC (~3 × 104 electrons) pulse of electrons at 2.8 MeV. The high quality of the electron diffraction patterns confirms that electron beam has a normalized emittance of ~50 nm rad. The transverse and longitudinal coherence length is ~11 and ~2.5 nm, respectively. The timing jitter between the pump laser and probe electron beam was found to be ~100 fs (rms). The temporal resolution is demonstrated by observing the evolution of Bragg and superlattice peaks of 1T-TaS2 following an 800 nm optical pump and was found to be 130 fs. Lastly, our results demonstrate the advantages of MeV electrons, including large elastic differential scattering cross-section and access to high-order reflections, and the feasibility of ultimately realizing below 10 fs time-resolved electron diffraction.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1307514
Journal Information:
New Journal of Physics, Vol. 17, Issue 6; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 86 works
Citation information provided by
Web of Science

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Cited By (30)

High-Speed Electron Microscopy book January 2019
Diffractive imaging of a rotational wavepacket in nitrogen molecules with femtosecond megaelectronvolt electron pulses journal April 2016
Dichotomy in ultrafast atomic dynamics as direct evidence of polaron formation in manganites journal November 2016
A novel nondestructive diagnostic method for mega-electron-volt ultrafast electron diffraction journal November 2019
Ultrafast Relativistic Electron Nanoprobes journal May 2019
Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study journal January 2018
Mega-electron-volt ultrafast electron diffraction at SLAC National Accelerator Laboratory journal July 2015
Ultrafast electron diffraction from non-equilibrium phonons in femtosecond laser heated Au films journal January 2016
Stacking order dynamics in the quasi-two-dimensional dichalcogenide 1 T -TaS 2 probed with MeV ultrafast electron diffraction journal July 2017
Outrunning damage: Electrons vs X-rays—timescales and mechanisms journal July 2017
Extensive study of electron acceleration by relativistic surface plasmons journal March 2018
Imaging nanoscale spatial modulation of a relativistic electron beam with a MeV ultrafast electron microscope journal March 2018
Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction journal September 2019
Energy-resolved coherent diffraction from laser-driven electronic motion in atoms journal October 2017
Few-femtosecond electron beam with terahertz-frequency wakefield-driven compression journal August 2018
Coulomb-Driven Relativistic Electron Beam Compression journal January 2018
Nonequilibrium electron and lattice dynamics of strongly correlated Bi 2 Sr 2 CaCu 2 O 8+δ single crystals journal April 2018
Femtosecond bond breaking and charge dynamics in ultracharged amino acids text January 2019
A Novel Nondestructive Diagnostic Method for Mega-Electron-Volt Ultrafast Electron Diffraction text January 2020
Femtosecond bond breaking and charge dynamics in ultracharged amino acids journal October 2019
Direct measurement of sub-10 fs relativistic electron beams with ultralow emittance text January 2016
Stacking order dynamic in the quasi-two-dimensional dichalcogenide 1T-TaS$_2$ probed with MeV ultrafast electron diffraction text January 2017
Extensive study of electron acceleration by relativistic surface plasmons text January 2018
Imaging nanoscale spatial modulation of a relativistic electron beam with a MeV ultrafast electron microscope text January 2018
Terahertz streaking of few-femtosecond relativistic electron beams text January 2018
Few-femtosecond Electron Beam with THz-frequency Wakefield-driven Compression text January 2018
Ultrafast Relativistic Electron Nanoprobes text January 2019
Ultrafast electron diffraction optimized for studying structural dynamics in thin films and monolayers journal May 2016
Shaped cathodes for the production of ultra-short multi-electron pulses journal July 2017
From structure to structural dynamics: Ahmed Zewail's legacy journal July 2017

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