Abstract
We find the analytical electromagnetic fields, both paraxial and with non-paraxial corrections, of an ultrashort radially polarized pulse-beam that has spatial chirp. This represents a powerful description of light that has a combination of both vector polarization and space-time structure, and it results in a novel evolution of the fields. The non-paraxial corrections allow for the application of the field solutions to tightly focused scenarios, whereby we can validate our solution via charged particle trajectories under the influence of such a pulse with high field strength.
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Data availability
Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request. Scripts are available publicly that can either reproduce the plotting of the electric field [55] or model the acceleration of the electron with such pulses [56].
55. S. W. Jolly, “RPLB-STC,” GitHub (2023), https://github.com/spencerjolly/RPLB-STC.
56. S. W. Jolly, “RPLB-acc,” GitHub (2023), https://github.com/spencerjolly/RPLB-acc.
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