Ultrashort laser-pulse-driven currents in conductors one-dimensional model for local excitation in the single-electron picture with quadratic dispersion /
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 oscillati...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2018
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| Sorozat: | JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B: OPTICAL PHYSICS
35 No. 5 |
| Tárgyszavak: | |
| doi: | 10.1364/JOSAB.35.00A116 |
| mtmt: | 3371210 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/32706 |
| Tartalmi kivonat: | 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 roles of all these effects are investigated for different electron energies, carrier frequencies, and sizes of the interaction area. (C) 2018 Optical Society of America |
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| Terjedelem/Fizikai jellemzők: | 10 A116-A125 |
| ISSN: | 0740-3224 |