Aufgrund von Vorbereitungen auf eine neue Version von KOPS, können am Montag, 6.2. und Dienstag, 7.2. keine Publikationen eingereicht werden. (Due to preparations for a new version of KOPS, no publications can be submitted on Monday, Feb. 6 and Tuesday, Feb. 7.)
Type of Publication: | Journal article |
URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-45847 |
Author: | Yee, K. J.; Lim, Y. S.; Dekorsy, Thomas; Kim, D. S. |
Year of publication: | 2001 |
Published in: | Physical Review Letters ; 86 (2001), 8. - pp. 1630-1633 |
DOI (citable link): | https://dx.doi.org/10.1103/PhysRevLett.86.1630 |
Summary: |
We show that coherent optical phonons in GaAs multiple quantum wells are generated in a completely different way as compared to bulk GaAs. Unlike in bulk GaAs where the ultrafast screening of electric fields by photogenerated charge carriers is known to be dominant, three distinctive generation mechanisms contribute simultaneously in multiple quantum wells. The interplay between impulsive Raman scattering, forbidden Raman scattering, and screening of surface electric fields, whose relative strengths are determined by laser intensity, detuning from the exciton resonance, and the barrier width, generates a rich variety of new phenomena.
|
Subject (DDC): | 530 Physics |
Link to License: | Attribution-NonCommercial-NoDerivs 2.0 Generic |
YEE, K. J., Y. S. LIM, Thomas DEKORSY, D. S. KIM, 2001. Mechanisms for the generation of coherent longitudinal-optical phonons in GaAs/AlGaAs multiple quantum wells. In: Physical Review Letters. 86(8), pp. 1630-1633. Available under: doi: 10.1103/PhysRevLett.86.1630
@article{Yee2001Mecha-9428, title={Mechanisms for the generation of coherent longitudinal-optical phonons in GaAs/AlGaAs multiple quantum wells}, year={2001}, doi={10.1103/PhysRevLett.86.1630}, number={8}, volume={86}, journal={Physical Review Letters}, pages={1630--1633}, author={Yee, K. J. and Lim, Y. S. and Dekorsy, Thomas and Kim, D. S.} }
<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/9428"> <dcterms:bibliographicCitation>First publ. in: Physical Review Letters 86 (2001), 8, pp. 1630-1633</dcterms:bibliographicCitation> <dcterms:abstract xml:lang="eng">We show that coherent optical phonons in GaAs multiple quantum wells are generated in a completely different way as compared to bulk GaAs. Unlike in bulk GaAs where the ultrafast screening of electric fields by photogenerated charge carriers is known to be dominant, three distinctive generation mechanisms contribute simultaneously in multiple quantum wells. The interplay between impulsive Raman scattering, forbidden Raman scattering, and screening of surface electric fields, whose relative strengths are determined by laser intensity, detuning from the exciton resonance, and the barrier width, generates a rich variety of new phenomena.</dcterms:abstract> <dc:creator>Yee, K. J.</dc:creator> <dc:format>application/pdf</dc:format> <dc:contributor>Dekorsy, Thomas</dc:contributor> <dcterms:title>Mechanisms for the generation of coherent longitudinal-optical phonons in GaAs/AlGaAs multiple quantum wells</dcterms:title> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dcterms:issued>2001</dcterms:issued> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9428/1/Mechanisms_for_the_generation_of_coherent.pdf"/> <dc:contributor>Yee, K. J.</dc:contributor> <dc:contributor>Lim, Y. S.</dc:contributor> <dc:creator>Lim, Y. S.</dc:creator> <dc:creator>Dekorsy, Thomas</dc:creator> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9428/1/Mechanisms_for_the_generation_of_coherent.pdf"/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:56:26Z</dc:date> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:56:26Z</dcterms:available> <dc:creator>Kim, D. S.</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:rights>Attribution-NonCommercial-NoDerivs 2.0 Generic</dc:rights> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:contributor>Kim, D. S.</dc:contributor> <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/2.0/"/> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9428"/> <dc:language>eng</dc:language> </rdf:Description> </rdf:RDF>
Mechanisms_for_the_generation_of_coherent.pdf | 472 |