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Attosecond angular streaking: an ideal technique to measure an electron tunneling time?

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Ultrafast Phenomena XVI

Abstract

We used attosecond angular streaking to measure attosecond ionization dynamics in the non-adiabatic tunneling regime of helium using slightly elliptically polarized 5.9 fs pulses with a peak intensity ranging from 2.3 to 3.5 x 1014 W/cm2 (corresponding to a Keldysh parameter variation of 1.45 to 1.17). With our technique we could demonstrate intensityindependent “instantaneous” ionization with an accuracy of 50 as. Numerical simulations based on the time-dependent Schrödinger equation confirm such ionization behavior with no distinct electron wave packets. This implies that we would not expect a tunneling time or multi-photon ionization delay in the ionization dynamics

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© 2009 Springer-Verlag Berlin Heidelberg

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Eckle, P. et al. (2009). Attosecond angular streaking: an ideal technique to measure an electron tunneling time?. In: Corkum, P., Silvestri, S., Nelson, K., Riedle, E., Schoenlein, R. (eds) Ultrafast Phenomena XVI. Springer Series in Chemical Physics, vol 92. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-95946-5_20

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  • DOI: https://doi.org/10.1007/978-3-540-95946-5_20

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-95945-8

  • Online ISBN: 978-3-540-95946-5

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