Mechanisms for the generation of coherent longitudinal-optical phonons in GaAs/AlGaAs multiple quantum wells
| 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: | Terms of use |
Cite This
Files in this item
![[PDF]](/themes/Kops/images/mimes/pdf.png "PDF file"){kind=small}
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> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dc:creator>Yee, K. J.</dc:creator> <dc:rights>terms-of-use</dc:rights> <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"/> <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"/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:contributor>Kim, D. S.</dc:contributor> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9428"/> <dc:language>eng</dc:language> </rdf:Description> </rdf:RDF>
Downloads since Oct 1, 2014 (Information about access statistics)
| Mechanisms_for_the_generation_of_coherent.pdf | 177 |
This item appears in the following Collection(s)
Except where otherwise noted, this item's license is described as terms-of-use
Search KOPS
Browse
My Account
