Volume 119, Number 1, July 2017
|Number of page(s)||7|
|Section||Atomic, Molecular and Optical Physics|
|Published online||07 September 2017|
Control of relativistic ionization by polarization of short laser pulses
Institute of Theoretical Physics, Faculty of Physics, University of Warsaw - Pasteura 5, 02-093 Warsaw, Poland
Received: 20 June 2017
Accepted: 17 August 2017
The Born approximation is applied to study the high-energy ionization that is driven by short, relativistically intense laser pulses. Assuming the fixed radiation flow through a surface of the laser focus, we investigate the optimal conditions for generating most energetic photoelectrons. We demonstrate that, under such constraint, one can control the photoelectron spectra using the polarization of the driving field. More precisely, the most energetic electrons are produced for a nearly linear polarization of the laser field. At the same time, the resulting electrons are detected in a narrow angular window which is of great importance for their potential applications; one of them being the generation of attosecond electron pulses.
PACS: 32.80.Fb – Photoionization of atoms and ions / 32.80.Qk – Coherent control of atomic interactions with photons / 41.75.Ht – Relativistic electron and positron beams
© EPLA, 2017
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