Record Details

Title:
Interference in the angular distribution of photoelectrons in superimposed XUV and optical laser fields
Topic:
Abstract:
The angular distribution of photoelectrons ejected during the ionization of Ne atoms by extreme ultraviolet (XUV) free-electron laser radiation in the presence of an intense near infrared (NIR) dressing field was investigated experimentally and theoretically. A highly nonlinear process with absorption and emission of more than ten NIR photons results in the formation of numerous sidebands. The amplitude of the sidebands varies strongly with the emission angle and the angular distribution pattern reveals clear signatures of interferences between the different angular momenta for the outgoing electron in the multi-photon process. As a specific feature, the central photoelectron line is characterized at the highest NIR fields by an angular distribution, which is peaked perpendicularly to both the XUV and NIR polarization directions. Experimental results are reproduced by a theoretical model based on the strong field approximation.
Imprint:
Bristol, IOP Publ., 2013
Journal Information:
J. Phys. B, 46, 16, 164026 (2013)
ISSN:
1361-6455
0022-3700
0953-4075
0368-3508
External related publications:
10.1088/0953-4075/46/16/164026
WOS:000323113100027 (WOS)


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 Record created 2016-10-11, last modified 2017-11-02


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