Abstract
We present a tomographic technique based on Photoelectron Angular Distributions (PADs) measured by Velocity-Map-Imaging (VMI) to reconstruct the three-dimensional shape of ultrashort free electron wave packets obtained from 1+2 Resonance Enhanced Multi-Photon Ionization (REMPI) of potassium atoms. To this end the laser pulse is rotated about its propagation direction and a set of PADs are recorded at different rotation angles. The tomographic reconstruction technique is described and results for linear and elliptical polarization are presented. Results for linearly polarized light producing cylindrically symmetric electron wave packets confirm the validity of our method whereas elliptically polarized light serves as a prototype for polarization-shaped laser pulses.
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Wollenhaupt, M., Krug, M., Köhler, J. et al. Three-dimensional tomographic reconstruction of ultrashort free electron wave packets. Appl. Phys. B 95, 647–651 (2009). https://doi.org/10.1007/s00340-009-3513-0
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DOI: https://doi.org/10.1007/s00340-009-3513-0