Berlin 2014 – scientific programme

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A: Fachverband Atomphysik

A 40: Interaction with strong or short laser pulses III

A 40.8: Talk

Thursday, March 20, 2014, 15:45–16:00, BEBEL E34

Strongly enhanced pair production in combined high- and low-frequency laser fields — •Martin J.A. Jansen and Carsten Müller — Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf

Creation of electron-positron pairs resulting from the decay of high-energy probe photons traveling in high-intensity laser fields is investigated [1]. The rate of the strong-field Breit-Wheeler process is shown to be strongly enhanced by the application of an additional laser mode with high-frequency but low amplitude, which effectively lowers the energetic barrier of the process. Our calculations are carried out nonperturbatively in an experimentally accessible regime.

[1] M.J.A. Jansen and C. Müller, Phys. Rev. A 88, 052125 (2013)