Interferences of ultrashort free electron wave packets |
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Authors: | Wollenhaupt M Assion A Liese D Sarpe-Tudoran Ch Baumert T Zamith S Bouchene M A Girard B Flettner A Weichmann U Gerber G |
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Institution: | Universit?t Kassel, Fachbereich Physik, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany. |
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Abstract: | Interferences of free electron wave packets generated by a pair of identical, time-delayed, femtosecond laser pulses which ionize excited atomic potassium have been observed. Two different schemes are investigated: threshold electrons produced by one-photon ionization with parallel laser polarization and above threshold ionization electrons produced by a two-photon transition with crossed laser polarization. Our results show that the temporal coherence of light pulses is transferred to free electron wave packets, thus opening the door to a whole variety of exciting experiments. |
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