Abstract
We investigate quantum trajectory control in high-order harmonic generation using an additional orthogonally polarised second harmonic field. By controlling the relative phase between this field and the fundamental, we are able to suppress and enhance particular electron trajectories which results in a modulation of the harmonic emission. We observe a phase shift of the modulation between the short and long trajectories that is different for adjacent odd and even harmonics. These results show qualitative agreement with a full propagation calculation where the single atom response was obtained from the strong field approximation and the main results are explained by consideration of a single atom quantum orbit picture.
Original language | English |
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Pages (from-to) | 608-614 |
Journal | JOURNAL OF MODERN OPTICS |
Volume | 61 |
Issue number | 7 |
Early online date | 25 Mar 2014 |
DOIs | |
Publication status | Published - 2014 |