Ultrashort laser pulse driven currents in conductors: physical mechanisms and time scales
Quantum Physics
2017-12-06 v1 Mesoscale and Nanoscale Physics
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.
Keywords
Cite
@article{arxiv.1712.01546,
title = {Ultrashort laser pulse driven currents in conductors: physical mechanisms and time scales},
author = {Istvan Magashegyi and Lorant Zs. Szabo and Peter Foldi},
journal= {arXiv preprint arXiv:1712.01546},
year = {2017}
}