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Dispersion compensation for attosecond electron pulses
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View: Figures


Image of FIG. 1.
FIG. 1.

Proposed setup for the EDC. An electron pulse is generated and disperses (left bottom). Subsequently, the electrons pass through two uniform magnetic fields (BT) and are spatially dispersed according to their kinetic energy. Higher (lower) energy electrons are indicated in blue (red). Green represents the trajectory of average energy electrons. Upon passing through a WF, the relative delay between the electrons is compensated. The WF is operated in its balanced mode where deflection due to parallel plates held at a potential V0 is compensated by deflection due to a magnetic field B. The electrons are spatially recombined by two further magnetic field sections.

Image of FIG. 2.
FIG. 2.

Pulse duration at the target position. The duration of the pulse is given as a function of the target position, X. The dash-dotted (red) line indicates the analytic solution assuming straight trajectories through the WF and no angular spread. The dashed (green) line indicates the numerical result including an energy spread, while the solid (blue) line indicates the numerical result that includes both the energy and angular spread.

Image of FIG. 3.
FIG. 3.

Optimal focus. The minimum focus (in femtoseconds) is given as a function of initial energy spread and angular spread. The white contours correspond to the areas where the temporal spreads are below 0.1 fs and 1.0 fs.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dispersion compensation for attosecond electron pulses