Attosecond electron pulses from interference of above-threshold de Broglie waves

Details Attosecond electron pulses from interference of above-threshold de Broglie waves Attosecond electron pulses from interference of above-threshold de Broglie waves

2007-05-02

arxiv.org/abs/0705.0212v1

Laser and Particle Beams (2008) Vol. 26, No.1, pages 9-19

Physics

Plasma Physics

40 pages, 6 figures

Scientific paper

10.1017/S0263034608000037

It is shown that the the interference of above-threshold electron de Broglie waves, generated by an intense laser pulse at a metal surface yields attosecond electron pulses. This inerference is an analogon of the superposition of high harmonics generated from rare gas atoms, resulting in trains of attosecond light pulses.Owing to the inherent kinematic dispersion, the propagation of attosecond de Broglie waves in vacuum is very different from that of attosecond light pulses, which propagate without changing shape. Above the metal surface there are "collaps bands" and "revival layers" of the electron current even at macroscopic distances. In the range of parameters considered, the maximum value of the current densities of such ultrashort electron pulses has been estimated to be of order of couple of tenths of milliamps per square centimeters.

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