Terahertz Compression of Electron Pulses at a Planar Mirror Membrane

Ehberger, Dominik; Mohler, Kathrin J.; Vasileiadis, Thomas; Ernstorfer, Ralph; Waldecker, Lutz; Baum, Peter

doi:10.1103/PhysRevApplied.11.024034

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Terahertz Compression of Electron Pulses at a Planar Mirror Membrane

MPS-Authors

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;

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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PhysRevApplied.11.024034.pdf
(出版社版), 904KB

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引用

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):. doi:10.1103/PhysRevApplied.11.024034.

引用: https://hdl.handle.net/21.11116/0000-0003-17A1-D

要旨

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.