Parts | Days | Selection | Search | Downloads | Help
HL: Fachverband Halbleiterphysik
HL 50: Ultra fast phenomena
HL 50.7: Talk
Friday, March 27, 2009, 12:00–12:15, BEY 118
High-harmonic generation by a driven mesoscopic ring with a localized impurity — Nicki Hinsche, •Andrey Moskalenko, and Jamal Berakdar — Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Germany
We investigate theoretically a single-channel semiconductor mesoscopic ring with a localized impurity subjected to half-cycle electromagnetic pulses. We show that the presence of an impurity strongly influences the induced time-dependent charge polarization and for strong excitations leads to the generation of higher harmonics in the terahertz range of the emitted light spectrum.