Bayer, Tim and Gräfing, Daniela and Kerbstadt, Stefanie and Pengel, Dominik and Eickhoff, Kevin and Englert, Lars and Wollenhaupt, Matthias (2019) Time-resolved 3D imaging of ultrafast spin–orbit wave packet dynamics. New Journal of Physics, 21 (3). 033001. ISSN 1367-2630

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Abstract

Deutsche Physikalische Gesellschaft logo Deutsche Physikalische Gesellschaft logo Institute of Physics logo Institute of Physics logo Paper • The following article is OPEN ACCESS Time-resolved 3D imaging of ultrafast spin–orbit wave packet dynamics Tim Bayer, Daniela Gräfing, Stefanie Kerbstadt, Dominik Pengel, Kevin Eickhoff, Lars Englert and Matthias Wollenhaupt Published 13 March 2019 • © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft New Journal of Physics, Volume 21, March 2019 Download Article PDF DownloadArticle ePub Figures References 1166 Total downloads 3 3 total citations on Dimensions. Article has an altmetric score of 1 Turn on MathJax Share this article Share this content via email Share on Facebook Share on Twitter Share on Google+ Share on Mendeley Article information Abstract We combine bichromatic polarization pulse shaping with photoelectron imaging tomography for time-resolved spatial imaging of ultrafast spin–orbit wave packet (SOWP) dynamics in atoms. Polarization-shaped two-color pump-probe sequences are generated by spectral amplitude and phase modulation of a femtosecond input pulse and used to excite SOWPs in the potassium $4p$ fine-structure doublet. By selecting different spectral bands for pump and probe pulse, we achieve interference-free detection of the spatiotemporal SOWP dynamics. Using tomographic techniques, we reconstruct the three-dimensional photoelectron momentum distribution (3D-ED) created by the probe pulse. Time-resolved measurement of the 3D-ED reveals the orbital realignment dynamics induced by spin–orbit interaction in the neutral atom.

Item Type:	Article
Additional Information:	Publiziert mit Hilfe des DFG-geförderten Open Access-Publikationsfonds der Carl von Ossietzky Universität Oldenburg.
Uncontrolled Keywords:	bichromatic polarization pulse shaping, photoelectron imaging tomography, ultrafast spin–orbit wave packet dynamics, femtosecond two-color pump-probe study, multiphoton ionization
Subjects:	Science and mathematics > Physics
Divisions:	Faculty of Mathematics and Science > Institute of Physics (IfP)
Date Deposited:	18 Mar 2020 10:03
Last Modified:	18 Mar 2020 10:03
URI:	https://oops.uni-oldenburg.de/id/eprint/4473
URN:	urn:nbn:de:gbv:715-oops-45546
DOI:	10.1088/1367-2630/aafb87
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