Ultrafast modulation of the plasma frequency of vertically aligned indium tin oxide rods.
Identifieur interne : 000015 ( Main/Exploration ); précédent : 000014; suivant : 000016Ultrafast modulation of the plasma frequency of vertically aligned indium tin oxide rods.
Auteurs : RBID : pubmed:24528114Abstract
Light-matter interaction at the nanoscale is of particular interest for future photonic integrated circuits and devices with applications ranging from communication to sensing and imaging. In this Letter a combination of transient absorption (TA) and the use of third harmonic generation as a probe (THG-probe) has been adopted to investigate the response of the localized surface plasmon resonances (LSPRs) of vertically aligned indium tin oxide rods (ITORs) upon ultraviolet light (UV) excitation. TA experiments, which are sensitive to the extinction of the LSPR, show a fluence-dependent increase in the frequency and intensity of the LSPR. The THG-probe experiments show a fluence-dependent decrease of the LSPR-enhanced local electric field intensity within the rod, consistent with a shift of the LSPR to higher frequency. The kinetics from both TA and THG-probe experiments are found to be independent of the fluence of the pump. These results indicate that UV excitation modulates the plasma frequency of ITO on the ultrafast time scale by the injection of electrons into, and their subsequent decay from, the conduction band of the rods. Increases to the electron concentration in the conduction band of ∼13% were achieved in these experiments. Computer simulation and modeling have been used throughout the investigation to guide the design of the experiments and to map the electric field distribution around the rods for interpreting far-field measurement results.
DOI: 10.1021/nl4028044
PubMed: 24528114
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Ultrafast modulation of the plasma frequency of vertically aligned indium tin oxide rods.</title><author><name sortKey="Tice, Daniel B" uniqKey="Tice D">Daniel B Tice</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry, Northwestern University , 2145 Sheridan Rd., Evanston, Illinois 60208-3113, United States.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Chemistry, Northwestern University , 2145 Sheridan Rd., Evanston, Illinois 60208-3113</wicri:regionArea></affiliation></author><author><name sortKey="Li, Shi Qiang" uniqKey="Li S">Shi-Qiang Li</name></author><author><name sortKey="Tagliazucchi, Mario" uniqKey="Tagliazucchi M">Mario Tagliazucchi</name></author><author><name sortKey="Buchholz, D Bruce" uniqKey="Buchholz D">D Bruce Buchholz</name></author><author><name sortKey="Weiss, Emily A" uniqKey="Weiss E">Emily A Weiss</name></author><author><name sortKey="Chang, Robert P H" uniqKey="Chang R">Robert P H Chang</name></author></titleStmt><publicationStmt><date when="2014">2014</date><idno type="doi">10.1021/nl4028044</idno><idno type="RBID">pubmed:24528114</idno><idno type="pmid">24528114</idno><idno type="wicri:Area/Main/Corpus">000155</idno><idno type="wicri:Area/Main/Curation">000155</idno><idno type="wicri:Area/Main/Exploration">000015</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Light-matter interaction at the nanoscale is of particular interest for future photonic integrated circuits and devices with applications ranging from communication to sensing and imaging. In this Letter a combination of transient absorption (TA) and the use of third harmonic generation as a probe (THG-probe) has been adopted to investigate the response of the localized surface plasmon resonances (LSPRs) of vertically aligned indium tin oxide rods (ITORs) upon ultraviolet light (UV) excitation. TA experiments, which are sensitive to the extinction of the LSPR, show a fluence-dependent increase in the frequency and intensity of the LSPR. The THG-probe experiments show a fluence-dependent decrease of the LSPR-enhanced local electric field intensity within the rod, consistent with a shift of the LSPR to higher frequency. The kinetics from both TA and THG-probe experiments are found to be independent of the fluence of the pump. These results indicate that UV excitation modulates the plasma frequency of ITO on the ultrafast time scale by the injection of electrons into, and their subsequent decay from, the conduction band of the rods. Increases to the electron concentration in the conduction band of ∼13% were achieved in these experiments. Computer simulation and modeling have been used throughout the investigation to guide the design of the experiments and to map the electric field distribution around the rods for interpreting far-field measurement results.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="In-Process"><PMID Version="1">24528114</PMID><DateCreated><Year>2014</Year><Month>03</Month><Day>12</Day></DateCreated><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1530-6992</ISSN><JournalIssue CitedMedium="Internet"><Volume>14</Volume><Issue>3</Issue><PubDate><Year>2014</Year><Month>Mar</Month><Day>12</Day></PubDate></JournalIssue><Title>Nano letters</Title><ISOAbbreviation>Nano Lett.</ISOAbbreviation></Journal><ArticleTitle>Ultrafast modulation of the plasma frequency of vertically aligned indium tin oxide rods.</ArticleTitle><Pagination><MedlinePgn>1120-6</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/nl4028044</ELocationID><Abstract><AbstractText>Light-matter interaction at the nanoscale is of particular interest for future photonic integrated circuits and devices with applications ranging from communication to sensing and imaging. In this Letter a combination of transient absorption (TA) and the use of third harmonic generation as a probe (THG-probe) has been adopted to investigate the response of the localized surface plasmon resonances (LSPRs) of vertically aligned indium tin oxide rods (ITORs) upon ultraviolet light (UV) excitation. TA experiments, which are sensitive to the extinction of the LSPR, show a fluence-dependent increase in the frequency and intensity of the LSPR. The THG-probe experiments show a fluence-dependent decrease of the LSPR-enhanced local electric field intensity within the rod, consistent with a shift of the LSPR to higher frequency. The kinetics from both TA and THG-probe experiments are found to be independent of the fluence of the pump. These results indicate that UV excitation modulates the plasma frequency of ITO on the ultrafast time scale by the injection of electrons into, and their subsequent decay from, the conduction band of the rods. Increases to the electron concentration in the conduction band of ∼13% were achieved in these experiments. Computer simulation and modeling have been used throughout the investigation to guide the design of the experiments and to map the electric field distribution around the rods for interpreting far-field measurement results.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Tice</LastName><ForeName>Daniel B</ForeName><Initials>DB</Initials><Affiliation>Department of Chemistry, Northwestern University , 2145 Sheridan Rd., Evanston, Illinois 60208-3113, United States.</Affiliation></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Shi-Qiang</ForeName><Initials>SQ</Initials></Author><Author ValidYN="Y"><LastName>Tagliazucchi</LastName><ForeName>Mario</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Buchholz</LastName><ForeName>D Bruce</ForeName><Initials>DB</Initials></Author><Author ValidYN="Y"><LastName>Weiss</LastName><ForeName>Emily A</ForeName><Initials>EA</Initials></Author><Author ValidYN="Y"><LastName>Chang</LastName><ForeName>Robert P H</ForeName><Initials>RP</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>02</Month><Day>19</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Nano Lett</MedlineTA><NlmUniqueID>101088070</NlmUniqueID><ISSNLinking>1530-6984</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2014</Year><Month>2</Month><Day>19</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>2</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>2</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>2</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1021/nl4028044</ArticleId><ArticleId IdType="pubmed">24528114</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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