Terahertz Compression of Electron Pulses at a Planar Mirror Membrane

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2019
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Ehberger, Dominik
Mohler, Kathrin J.
Vasileiadis, Thomas
Ernstorfer, Ralph
Waldecker, Lutz
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European Union (EU): 647771
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Direct Visualization of Light-Driven Atomic-Scale Carrier Dynamics in Space and Time DIVI
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Physical Review Applied. 2019, 11(2), 024034. eISSN 2331-7019. Available under: doi: 10.1103/PhysRevApplied.11.024034
Zusammenfassung

Compression of electron pulses with terahertz radiation offers short pulse durations and intrinsic subcycle stability in time. We report the generation of 12-fs (rms), 28-fs (FWHM) electron pulses at a kinetic energy of 75 keV by using single-cycle terahertz radiation and a simple planar mirror. The mirror interface provides transverse velocity matching and spatially uniform compression in time with purely longitudinal field-electron interaction. The measured short-term and long-term temporal drifts are substantially below the pulse duration without any active synchronization. A simple phase-space model explains the measured temporal focusing dynamics for different compressor strengths and shows a path toward generating isolated attosecond electron pulses from beams of almost arbitrary transverse emittance.

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ISO 690EHBERGER, Dominik, Kathrin J. MOHLER, Thomas VASILEIADIS, Ralph ERNSTORFER, Lutz WALDECKER, Peter BAUM, 2019. Terahertz Compression of Electron Pulses at a Planar Mirror Membrane. In: Physical Review Applied. 2019, 11(2), 024034. eISSN 2331-7019. Available under: doi: 10.1103/PhysRevApplied.11.024034
BibTex
@article{Ehberger2019-02-13Terah-46409,
  year={2019},
  doi={10.1103/PhysRevApplied.11.024034},
  title={Terahertz Compression of Electron Pulses at a Planar Mirror Membrane},
  number={2},
  volume={11},
  journal={Physical Review Applied},
  author={Ehberger, Dominik and Mohler, Kathrin J. and Vasileiadis, Thomas and Ernstorfer, Ralph and Waldecker, Lutz and Baum, Peter},
  note={Article Number: 024034}
}
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