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Broadband Photo-Excited Coherent Acoustic Frequency Combs and Mini-Brillouin-Zone Modes in a MQW-SESAM Structure

Broadband Photo-Excited Coherent Acoustic Frequency Combs and Mini-Brillouin-Zone Modes in a MQW-SESAM Structure

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LI, Changxiu, Vitalyi GUSEV, Emmanouil DIMAKIS, Thomas DEKORSY, Mike HETTICH, 2019. Broadband Photo-Excited Coherent Acoustic Frequency Combs and Mini-Brillouin-Zone Modes in a MQW-SESAM Structure. In: Applied Sciences. 9(2), 289. eISSN 2076-3417. Available under: doi: 10.3390/app9020289

@article{Li2019-01-15Broad-45498, title={Broadband Photo-Excited Coherent Acoustic Frequency Combs and Mini-Brillouin-Zone Modes in a MQW-SESAM Structure}, year={2019}, doi={10.3390/app9020289}, number={2}, volume={9}, journal={Applied Sciences}, author={Li, Changxiu and Gusev, Vitalyi and Dimakis, Emmanouil and Dekorsy, Thomas and Hettich, Mike}, note={Article Number: 289} }

<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/123456789/45498"> <dc:creator>Li, Changxiu</dc:creator> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dcterms:title>Broadband Photo-Excited Coherent Acoustic Frequency Combs and Mini-Brillouin-Zone Modes in a MQW-SESAM Structure</dcterms:title> <dc:contributor>Li, Changxiu</dc:contributor> <dc:creator>Gusev, Vitalyi</dc:creator> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-03-18T13:48:27Z</dc:date> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-03-18T13:48:27Z</dcterms:available> <dc:creator>Hettich, Mike</dc:creator> <dc:creator>Dekorsy, Thomas</dc:creator> <dcterms:abstract xml:lang="eng">A multiple quantum-well semiconductor saturable absorber mirror (MQW-SESAM) structure has been investigated by femtosecond pump-probe laser spectroscopy at a central wavelength of around 1050 nm. Coherent acoustic phonons are generated and detected over a wide frequency range from ~15 GHz to ~800 GHz. In the optical absorption region, i.e., in the multiple quantum wells (In0.27Ga0.73As), acoustic frequency combs centered at ~365 GHz, with a comb spacing of ~33 GHz, are generated. Most importantly, in the transparent region, i.e., in the distributed Bragg reflector, which is formed by a non-doped long-period semiconductor GaAs/Al0.95Ga0.05As superlattice, the mini-Brillouin-zone center, as well as zone-edge acoustic modes, are observed. The mini-zone-center modes with a fundamental frequency of 32 GHz can be attributed to the spatial modulation of the pump optical interference field with a period very close to that of the distributed Bragg reflector, in combination with the periodic spatial modulation of the electrostriction coefficient in the distributed Bragg reflector. The excitation of mini-zone-edge modes is attributed to the stimulated subharmonic decay of the fundamental center modes. Their subsequent back-folding to the mini-Brillouin-zone center makes them Raman active for the probe light.</dcterms:abstract> <dc:rights>terms-of-use</dc:rights> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/45498"/> <dc:contributor>Dimakis, Emmanouil</dc:contributor> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/45498/1/Li_2-1uq0z3hugfq4n9.pdf"/> <dc:language>eng</dc:language> <dcterms:issued>2019-01-15</dcterms:issued> <dc:contributor>Dekorsy, Thomas</dc:contributor> <dc:creator>Dimakis, Emmanouil</dc:creator> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/45498/1/Li_2-1uq0z3hugfq4n9.pdf"/> <dc:contributor>Gusev, Vitalyi</dc:contributor> <dcterms:rights rdf:resource="https://kops.uni-konstanz.de/page/termsofuse"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Hettich, Mike</dc:contributor> </rdf:Description> </rdf:RDF>

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