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Article Dans Une Revue Optics Letters Année : 2020

On the importance of frequency-dependent beam parameters for vacuum acceleration with few-cycle radially-polarized laser beams

Résumé

Tightly focused, ultrashort radially polarized laser beams have a large longitudinal field, which provides a strong motivation for direct particle acceleration and manipulation in a vacuum. The broadband nature of these beams means that chromatic properties of propagation and focusing are important to consider. We show via single-particle simulations that using the correct frequency-dependent beam parameters is imperative, especially as the pulse duration decreases to the few-cycle regime. The results with different spatio-spectral amplitude profiles show either a drastic increase or decrease of the final accelerated electron energy depending on the shape, motivating both proper characterization and potentially a route to optimization.

Dates et versions

hal-02458745 , version 1 (28-01-2020)

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Citer

Spencer W. Jolly. On the importance of frequency-dependent beam parameters for vacuum acceleration with few-cycle radially-polarized laser beams. Optics Letters, 2020, 45 (14), pp.3865-3868. ⟨10.1364/OL.394493⟩. ⟨hal-02458745⟩
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