All-optical control of a single plasmonic nanoantenna–ITO hybrid
Abb, Martina, Albella, Pablo, Aizpurua, Javier and Muskens, Otto L. (2011) All-optical control of a single plasmonic nanoantenna–ITO hybrid. Nano Letters, 11, (6), 2457-2463. (doi:10.1021/nl200901w)
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Description/Abstract
We 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.
| Item Type: | Article |
|---|---|
| ISSN: | 1530-6984 (print) 1530-6992 (electronic) |
| Uncontrolled Keywords: | active, plasmonic, nanoantenna, hybrid nanostructures, nanophotonics |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy > Quantum, Light and Matter |
| ePrint ID: | 190355 |
| URI: | http://eprints.soton.ac.uk/id/eprint/190355 |
| Deposited On: | 13 Jun 2011 10:21 |
| Last Modified: | 01 Jul 2011 08:39 |
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