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arXiv · 1704.08919

Pulse shape optimization for electron-positron production in rotating fields

François Fillion-Gourdeau·Florian Hebenstreit·Denis Gagnon·Steve MacLean
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Abstract

We optimize the pulse shape and polarization of time-dependent electric fields to maximize the production of electron-positron pairs via strong field quantum electrodynamics processes. The pulse is parametrized in Fourier space by a B-spline polynomial basis, which results in a relatively low-dimensional parameter space while still allowing for a large number of electric field modes. The optimization is performed by using a parallel implementation of the differential evolution, one of the most efficient metaheuristic algorithms. The computational performance of the numerical method and the results on pair production are compared with a local multistart optimization algorithm. These techniques allow us to determine the pulse shape and field polarization that maximize the number of produced pairs in computationally accessible regimes.

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François Fillion-Gourdeau, Florian Hebenstreit, Denis Gagnon, Steve MacLean. 2017-04-28. Pulse shape optimization for electron-positron production in rotating fields. https://doi.org/10.1103/physrevd.96.016012

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