Effects of elliptical polarization on strong-field short-pulse double ionization.
We predict new end-of-pulse behavior in high-field atomic double ionization. Calculations of atomic electron trajectories in short intense laser pulses confirm our analysis of elliptical polarization. We exhibit a four-band structure in ion momentum distributions under various ellipticities, and predict that sequential and nonsequential double ionization can be cleanly distinguished under elliptical polarization.
Rochester Theory Center and the Department of Physics & Astronomy, University of Rochester, Rochester, New York 14627, USA. wangxu@pas.rochester.edu
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