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Terahertz Compression of Electron Pulses at a Planar Mirror Membrane

MPG-Autoren
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Ehberger,  Dominik
Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Ludwig-Maximilians-Universität München;

Mohler,  Kathrin J.
Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Ludwig-Maximilians-Universität München;

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Vasileiadis,  Thomas
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ernstorfer,  Ralph
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Waldecker,  Lutz
Physical Chemistry, Fritz Haber Institute, Max Planck Society;
Department of Applied Physics, Stanford University;

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Baum,  Peter
Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Ludwig-Maximilians-Universität München;
Fachbereich Physik, Universität Konstanz;

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Zitation

Ehberger, D., Mohler, K. J., Vasileiadis, T., Ernstorfer, R., Waldecker, L., & Baum, P. (2019). Terahertz Compression of Electron Pulses at a Planar Mirror Membrane. Physical Review Applied, 11(2): 024034. doi:10.1103/PhysRevApplied.11.024034.


Zitierlink: https://hdl.handle.net/21.11116/0000-0003-49C4-E
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.