Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 22: Poster: Interaction with strong or short laser pulses

A 22.9: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Electron-Positron Pair Generation in a Bichromatic Laser Field — •Martin Josef Alexander Jansen and Carsten Müller — Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf

The creation of an electron-positron pair resulting from the collision of photons was first considered by Breit and Wheeler [1] and experimentally observed at SLAC [2]. We regard the case of a bichromatic laser field, where quantum inferences can be expected [3]. In our analysis, the generated particles are described by Volkov solutions of the corresponding Klein-Gordon Equation. We discuss effects related to the relative phase of the two fields as well as interference effects between different absorption channels.

[1] G. Breit and J.A. Wheeler, Phys. Rev. 46, 1087 (1934)

[2] D.L. Burke et al., Phys. Rev. Lett. 79, 1626 (1997)

[3] N.B. Narozhny and M.S. Fofanov, J. Exp. Theor. Phys. 90, 415 (2000)