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Title: Photoelectron holography in strong optical and dc electric fields
Authors: Stodolna, A.Huismans, Y.Rouzée, A.Lépine, F.Vrakking, M.J.J.
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Issue Date: 2014
Published in: Journal of Physics: Conference Series Vol. 488 (2014)
Publisher: Bristol : Institute of Physics Publishing
Abstract: The application of velocity map imaging for the detection of photoelectrons resulting from atomic or molecular ionization allows the observation of interferometric, and in some cases holographic structures that contain detailed information on the target from which the photoelecrons are extracted. In this contribution we present three recent examples of the use of photoelectron velocity map imaging in experiments where atoms are exposed to strong optical and dc electric fields. We discuss (i) observations of the nodal structure of Stark states of hydrogen measured in a dc electric field, (ii) mid-infrared strong-field ionization of metastable Xe atoms and (iii) the reconstruction of helium electronic wavepackets in an attosecond pump-probe experiment. In each case, the interference between direct and indirect electron pathways, reminiscent of the reference and signal waves in holography, is seen to play an important role.
Keywords: Atoms; Electric fields; Holography; Ionization; Photoelectrons; Photons; Ionization of gases; Scheduling; Dc electric field; Holographic structures; Molecular ionization; Nodal structures; Photoelectron holographies; Pump-probe experiments; Strong field ionization; Velocity map imaging; Photoionization
DDC: 530
License: CC BY 3.0 Unported
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