Tunable plasmonic Yagi-Uda nanoantenna

We suggest and theoretically study a novel tunable plasmonic Yagi-Uda nanoantenna driven by means of a feed element consisting of two closely spaced metal nanobars separated by a gap filled with a semiconductor. Through extensive numerical simulations we demonstrate that a variation of the free-carr...

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Bibliographic Details
Published in2011 International Workshop on Nonlinear Photonics pp. 1 - 3
Main Authors Maksymov, I. S., Miroshnichenko, A. E., Kivshar, Y. S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2011
Subjects
Feeds
Nonlinear optics
Optical pumping
Optical sensors
Plasmons
Yagi-Uda antennas
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Summary:We suggest and theoretically study a novel tunable plasmonic Yagi-Uda nanoantenna driven by means of a feed element consisting of two closely spaced metal nanobars separated by a gap filled with a semiconductor. Through extensive numerical simulations we demonstrate that a variation of the free-carrier density in the semiconductor strongly modifies the antenna's response in both near-field and far-field regions, which opens up ways for active all-optical spectral tuning of the nanoantenna.
ISBN:1457704773
9781457704772
DOI:10.1109/NLP.2011.6102668