dc.contributor.author | Lisauskas, Alvydas | |
dc.contributor.author | Blöser, Claudia | |
dc.contributor.author | Hummel, Anne Beate | |
dc.contributor.author | Sachs, Robert | |
dc.contributor.author | Roskos, Hartmut G. | |
dc.contributor.author | Juozapavičius, Aušrius | |
dc.contributor.author | Valušis, Gintaras | |
dc.contributor.author | Köhler, Klaus | |
dc.date.accessioned | 2023-09-18T20:22:52Z | |
dc.date.available | 2023-09-18T20:22:52Z | |
dc.date.issued | 2005 | |
dc.identifier.issn | 1610-1634 | |
dc.identifier.other | (BIS)LBT02-000014583 | |
dc.identifier.uri | https://etalpykla.vilniustech.lt/handle/123456789/149379 | |
dc.description.abstract | We report on time-resolved photocurrent spectroscopy of an intrinsic GaAs/Al0.3Ga0.7As superlattice subsequent to femtosecond optical excitation. Information on the spatio-temporal evolution of the densities of electrons and holes and on the internal electric field is obtained by tracing Wannier-Stark photocurrent spectra as a function of delay time for various bias fields and pump excitation intensities. The experimental results are supplemented by simulations. We employ the combined information to define the conditions to be met for succesful pump-probe Bloch gain experiments. In particular, we find that field screening sets on upper limit for the carrier density of 1016 cm-3, and that the time window during which gain should be found is defined by the duration of the sweep-out of the optically injected electrons from the superlattice which occurs within about 10 ps after excitation. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim). | eng |
dc.format | PDF | |
dc.format.extent | p. 3055-3058 | |
dc.format.medium | tekstas / txt | |
dc.language.iso | eng | |
dc.relation.isreferencedby | INSPEC | |
dc.relation.isreferencedby | Chemical abstracts | |
dc.relation.isreferencedby | Compendex | |
dc.source.uri | http://dx.doi.org/doi:10.1002/pssc.200460730 | |
dc.title | The evolution of the electric field in an optically excited semiconductor superlattice | |
dc.type | Straipsnis kitoje DB / Article in other DB | |
dcterms.references | 9 | |
dc.type.pubtype | S3 - Straipsnis kitoje DB / Article in other DB | |
dc.contributor.institution | Johann Wolfgang Goethe university | |
dc.contributor.institution | Puslaidininkių fizikos institutas | |
dc.contributor.institution | Puslaidininkių fizikos institutas Vilniaus Gedimino technikos universitetas | |
dc.contributor.institution | Fraunhofer-Institut für angewandte Festkörperphysik. Freiburg | |
dc.contributor.faculty | Fundamentinių mokslų fakultetas / Faculty of Fundamental Sciences | |
dc.subject.researchfield | N 002 - Fizika / Physics | |
dc.subject.lt | Puslaidininkinės supergardelės | |
dc.subject.lt | Ultrasparčioji spektroskopija | |
dc.subject.lt | Bloch’o stiprinimas | |
dc.subject.en | Semiconductor superlattices | |
dc.subject.en | Ultrahigh spectroscopy | |
dc.subject.en | Bloch gain | |
dcterms.sourcetitle | Physica status solidi. C, Current topics in solid state physics | |
dc.description.issue | no. 8 | |
dc.description.volume | Vol. 2 | |
dc.identifier.doi | VGT02-000010999 | |
dc.identifier.doi | 10.1002/pssc.200460730 | |
dc.identifier.elaba | 5491292 | |