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Proceedings Paper

Femtosecond electron gun for diffraction experiments
Author(s): Ernst Fill; Laszlo Veisz; Alexander Apolonski; Ferenc Krausz
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Paper Abstract

The concept of an electron gun for generating pulses with a duration <10 fs at energies suitable for electron diffraction experiments is presented. The principle is based on an rf cavity oscillating in the TM010 mode. Laser pulses for photoemission are injected at a well-defined phase of the rf oscillation such that electrons with different initial velocities and different time delays arrive at a target within a very small temporal window. Coulomb broadening is prevented by reducing the number of electrons to the level of a single electron per pulse while increasing the repetition rate to the MHz range. The fs-electron pulses generated will advance the time-resolution of electron diffraction experiments to the level of a vibrational period of molecules.

Paper Details

Date Published: 19 April 2006
PDF: 9 pages
Proc. SPIE 6194, Millimeter-Wave and Terahertz Photonics, 61940J (19 April 2006); doi: 10.1117/12.682975
Show Author Affiliations
Ernst Fill, Max-Planck-Institut für Quantenoptik (Germany)
Laszlo Veisz, Max-Planck-Institut für Quantenoptik (Germany)
Alexander Apolonski, Univ. München (Germany)
Institute of Automation and Electrometry (Russia)
Ferenc Krausz, Max-Planck-Institut für Quantenoptik (Germany)
Univ. München (Germany)


Published in SPIE Proceedings Vol. 6194:
Millimeter-Wave and Terahertz Photonics
Dieter Jäger; Andreas Stöhr, Editor(s)

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