Observation of coherent zone-folded acoustic phonons generated by Raman scattering in a superlattice
| Publikationstyp: | Zeitschriftenartikel |
| URI (zitierfähiger Link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-44904 |
| Autor/innen: | Hawker, Philip; Kent, Anthony J.; Challis, Lawrence J.; Bartels, Albrecht; Dekorsy, Thomas; Kurz, Heinrich; Köhler, Klaus |
| Erscheinungsjahr: | 2000 |
| Erschienen in: | Applied Physics Letters ; 77 (2000), 20. - S. 3209-3211 |
| DOI (zitierfähiger Link): | https://dx.doi.org/10.1063/1.1324981 |
| Zusammenfassung: |
We have used pulse time-of-flight techniques to examine the phonon emission from an optically excited GaAs/AlAs superlattice structure. For laser excitation wavelengths shorter than 767 nm (the energy of E1HH1 transition), we detect a significant longitudinal acoustic phonon component directed in a narrow beam normal to the structure. Under identical excitation conditions, generation of coherent longitudinal acoustic phonons has previously been observed in this structure. We suggest that the excitation wavelength and angular characteristics of the longitudinal acoustic emission is consistent with those of propagating modes produced as coherent phonons "leak" from the superlattice structure.
|
| Fachgebiet (DDC): | 530 Physik |
| Link zur Lizenz: | Nutzungsbedingungen |
Zitieren
Dateien zu dieser Ressource
![[PDF]](/themes/Kops/images/mimes/pdf.png "PDF file"){kind=small}
HAWKER, Philip, Anthony J. KENT, Lawrence J. CHALLIS, Albrecht BARTELS, Thomas DEKORSY, Heinrich KURZ, Klaus KÖHLER, 2000. Observation of coherent zone-folded acoustic phonons generated by Raman scattering in a superlattice. In: Applied Physics Letters. 77(20), pp. 3209-3211. Available under: doi: 10.1063/1.1324981
@article{Hawker2000Obser-5119, title={Observation of coherent zone-folded acoustic phonons generated by Raman scattering in a superlattice}, year={2000}, doi={10.1063/1.1324981}, number={20}, volume={77}, journal={Applied Physics Letters}, pages={3209--3211}, author={Hawker, Philip and Kent, Anthony J. and Challis, Lawrence J. and Bartels, Albrecht and Dekorsy, Thomas and Kurz, Heinrich and Köhler, Klaus} }
<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/123456789/5119"> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:53:19Z</dcterms:available> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/5119/1/Observation_of_coherent_zone_folded_acoustic_phonons_generated_by_Raman_scattering_in_a_superlattice.pdf"/> <dc:contributor>Dekorsy, Thomas</dc:contributor> <dc:creator>Hawker, Philip</dc:creator> <dc:language>eng</dc:language> <dc:contributor>Köhler, Klaus</dc:contributor> <dc:creator>Bartels, Albrecht</dc:creator> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dcterms:title>Observation of coherent zone-folded acoustic phonons generated by Raman scattering in a superlattice</dcterms:title> <dc:creator>Kent, Anthony J.</dc:creator> <dc:contributor>Bartels, Albrecht</dc:contributor> <dc:creator>Kurz, Heinrich</dc:creator> <dc:creator>Köhler, Klaus</dc:creator> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:creator>Dekorsy, Thomas</dc:creator> <dcterms:abstract xml:lang="eng">We have used pulse time-of-flight techniques to examine the phonon emission from an optically excited GaAs/AlAs superlattice structure. For laser excitation wavelengths shorter than 767 nm (the energy of E1HH1 transition), we detect a significant longitudinal acoustic phonon component directed in a narrow beam normal to the structure. Under identical excitation conditions, generation of coherent longitudinal acoustic phonons has previously been observed in this structure. We suggest that the excitation wavelength and angular characteristics of the longitudinal acoustic emission is consistent with those of propagating modes produced as coherent phonons "leak" from the superlattice structure.</dcterms:abstract> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/5119"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:contributor>Challis, Lawrence J.</dc:contributor> <dc:format>application/pdf</dc:format> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/5119/1/Observation_of_coherent_zone_folded_acoustic_phonons_generated_by_Raman_scattering_in_a_superlattice.pdf"/> <dcterms:bibliographicCitation>First publ. in: Applied Physics Letters 77 (2000), 20, pp. 3209-3211</dcterms:bibliographicCitation> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:53:19Z</dc:date> <dc:contributor>Kurz, Heinrich</dc:contributor> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:contributor>Kent, Anthony J.</dc:contributor> <dcterms:issued>2000</dcterms:issued> <dc:creator>Challis, Lawrence J.</dc:creator> <dc:contributor>Hawker, Philip</dc:contributor> <dc:rights>terms-of-use</dc:rights> </rdf:Description> </rdf:RDF>
Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)
| Observation_of_coherent_zone_folded_acoustic_phonons_generated_by_Raman_scattering_in_a_superlattice.pdf | 186 |
Das Dokument erscheint in:
Solange nicht anders angezeigt, wird die Lizenz wie folgt beschrieben: terms-of-use
KOPS Suche
Stöbern
Mein Benutzerkonto
