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Title

All-optical control of a single plasmonic nanoantenna–ITO hybrid

AuthorsAbb, Martina; Albella, Pablo ; Aizpurua, Javier ; Muskens, Otto L.
KeywordsActive
Plasmonic
Nanoantenna
Hybrid nanostructures
Nanophotonics
Issue Date2011
PublisherAmerican Chemical Society
CitationNano Letters 11(6): 2457–2463 (2011)
AbstractWe demonstrate experimentally picosecond all-optical control of a single plasmonic nanoantenna embedded in indium tin oxide (ITO). We identify a picosecond response of the antenna–ITO hybrid system, which is distinctly different from transient bleaching observed for gold antennas on a nonconducting SiO2 substrate. Our experimental results can be explained by the large free-carrier nonlinearity of ITO, which is enhanced by plasmon-induced hot-electron injection from the gold nanoantenna into the conductive oxide. The combination of tunable antenna–ITO hybrids with nanoscale plasmonic energy transfer mechanisms, as demonstrated here, opens a path for new ultrafast devices to produce nanoplasmonic switching and control.
Description7 páginas, 6 figuras, 1 tabla.
Publisher version (URL)http://dx.doi.org/10.1021/nl200901w
URIhttp://hdl.handle.net/10261/48290
DOI10.1021/nl200901w
ISSN1530-6984
E-ISSN1530-6992
Appears in Collections:(CFM) Artículos
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