On e^+e^- pair production by a focused laser pulse in vacuum

Details On e^+e^- pair production by a focused laser pulse in vacuum On e^+e^- pair production by a focused laser pulse in vacuum

2004-03-15

arxiv.org/abs/hep-ph/0403163v1

Phys.Lett. A330 (2004) 1-6

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 5 figures, 1 table; revtex4

Scientific paper

10.1016/j.physleta.2004.07.013

The probability of electron-positron pair creation by a focused laser pulse is calculated. For description of the focused laser pulse we use a 3-dimensional model of the electromagnetic field which is based on an exact solution of Maxwell equations. There exists two types of focused waves: e- and h-polarized waves with only either electric, or magnetic vector being transverse respectively. It is shown that pair production is possible only in $e$-polarized electromagnetic wave. The dependence of the pair production probability on the intensity of the laser pulse is obtained. It is argued that there exists a natural physical limit for attainable focused laser pulse intensities. This limit is posed by the pulse energy loss due to the effect of pair creation.

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