%0 Journal Article %1 huang2010imaging %A Huang, Jer-Shing %A Kern, Johannes %A Geisler, Peter %A Weinmann, Pia %A Kamp, Martin %A Forchel, Alfred %A Biagioni, Paolo %A Hecht, Bert %D 2010 %J Nano Lett. %K TPPL antenna experiment nano-optics plasmon strong-coupling %N 6 %P 2105-2110 %R 10.1021/nl100614p %T Mode Imaging and Selection in Strongly Coupled Nanoantennas %V 10 %X The number of eigenmodes in plasmonic nanostructures increases with complexity due to mode hybridization, raising the need for efficient mode characterization and selection. Here we experimentally demonstrate direct imaging and selective excitation of the “bonding” and “antibonding” plasmon mode in symmetric dipole nanoantennas using confocal two-photon photoluminescence mapping. Excitation of a high-quality-factor antibonding resonance manifests itself as a two-lobed pattern instead of the single spot observed for the broad “bonding” resonance in accordance with numerical simulations. The two-lobed pattern is observed due to the fact that excitation of the antibonding mode is forbidden for symmetric excitation at the feedgap, while concomitantly the mode energy splitting is large enough to suppress excitation of the “bonding” mode. The controlled excitation of modes in strongly coupled plasmonic nanostructures is mandatory for efficient sensors, in coherent control as well as for implementing well-defined functionalities in complex plasmonic devices.

@article{huang2010imaging, abstract = {The number of eigenmodes in plasmonic nanostructures increases with complexity due to mode hybridization, raising the need for efficient mode characterization and selection. Here we experimentally demonstrate direct imaging and selective excitation of the “bonding” and “antibonding” plasmon mode in symmetric dipole nanoantennas using confocal two-photon photoluminescence mapping. Excitation of a high-quality-factor antibonding resonance manifests itself as a two-lobed pattern instead of the single spot observed for the broad “bonding” resonance in accordance with numerical simulations. The two-lobed pattern is observed due to the fact that excitation of the antibonding mode is forbidden for symmetric excitation at the feedgap, while concomitantly the mode energy splitting is large enough to suppress excitation of the “bonding” mode. The controlled excitation of modes in strongly coupled plasmonic nanostructures is mandatory for efficient sensors, in coherent control as well as for implementing well-defined functionalities in complex plasmonic devices.}, added-at = {2020-02-21T10:38:06.000+0100}, author = {Huang, Jer-Shing and Kern, Johannes and Geisler, Peter and Weinmann, Pia and Kamp, Martin and Forchel, Alfred and Biagioni, Paolo and Hecht, Bert}, biburl = {https://www.bibsonomy.org/bibtex/202b3743d7cc5a312d80b331893c3703f/ep5optics}, day = 09, doi = {10.1021/nl100614p}, file = {ACS Full Text Snapshot:C\:\\Users\\scherzad\\Zotero\\storage\\Z8V97HWZ\\nl100614p.html:text/html;Huang et al. - 2010 - Mode Imaging and Selection in Strongly Coupled Nan.pdf:C\:\\Users\\scherzad\\Zotero\\storage\\4P2ZG7BK\\Huang et al. - 2010 - Mode Imaging and Selection in Strongly Coupled Nan.pdf:application/pdf}, interhash = {49b733e890a30b646f6128cc8ad58db6}, intrahash = {02b3743d7cc5a312d80b331893c3703f}, issn = {1530-6984}, journal = {Nano Lett.}, keywords = {TPPL antenna experiment nano-optics plasmon strong-coupling}, month = {06}, note = {<a href="https://arxiv.org/abs/1002.3887v1" style="font-style: normal;">&raquo; arXiv:1002.3887v1 </a>}, number = 6, pages = {2105-2110}, timestamp = {2020-03-10T14:34:02.000+0100}, title = {Mode Imaging and Selection in Strongly Coupled Nanoantennas}, urldate = {2020-02-21}, volume = 10, year = 2010 }