Three-Dimensional Momentum Imaging of Electron Wave Packet Interference in Few-Cycle Laser Pulses
- Gopal, R.
- Simeonidis, K.
- Moshammer, R.
- Ergler, T.
- Dürr, M.
- Kurka, M.
- Kühnel, K.-U.
- Tschuch, S.
- Schröter, C. D.
- Bauer, D.
- Ullrich, J.
- Rudenko, A.
- Herrwerth, O.
- Uphues, T.
- Schultze, M.
- Goulielmakis, E.
- Uiberacker, M.
- Lezius, M.
- Kling, M. F.
Publication date
January 2009
DOIAbstract
Using a reaction microscope, three-dimensional (3D) electron (and ion) momentum (P) spectra have been recorded for carrier-envelope-phase (CEP) stabilized few-cycle (~5 fs), intense (~4×1014 W/cm2) laser pulses (740 nm) impinging on He. Preferential emission of low-energy electrons (Ee<15 eV) to either hemisphere is observed as a function of the CEP. Clear interference patterns emerge in P space at CEPs with maximum asymmetry, interpreted as attosecond interferences of rescattered and directly emitted electron wave packets by means of a simple model
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