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arXiv · 1712.01546

Ultrashort laser pulse driven currents in conductors: physical mechanisms and time scales

Istvan Magashegyi·Lorant Zs. Szabo·Peter Foldi
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Abstract

The response of conduction band electrons to a local, pulse-like external excitation is investigated. The charge density wave packets that emerge as a consequence of the excitation leave the interaction region with a speed close to the initial state's band velocity, but there are also oscillations with essentially the same frequency as that of the laser field. As a good estimation, the excitation can also be considered as a localized, time-dependent ponderomotive potential, leading to slowly varying current oscillations. The role of all these effects are investigated for different electron energies, carrier frequencies and sizes of the interaction area.

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Istvan Magashegyi, Lorant Zs. Szabo, Peter Foldi. 2017-12-05. Ultrashort laser pulse driven currents in conductors: physical mechanisms and time scales. https://arxiv.org/abs/1712.01546

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