Measurement and Reduction of Damping in Plasmonic Nanowires
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- 作者：Primoz Kusar ; Christian Gruber ; Andreas Hohenau ; Joachim R. Krenn
- 刊名：Nano Letters
- 出版年：2012
- 出版时间：February 8, 2012
- 年：2012
- 卷：12
- 期：2
- 页码：661-665
- 全文大小：281K
- 年卷期：v.12,no.2(February 8, 2012)
- ISSN：1530-6992
文摘
We report on a spectroscopic study of surface plasmon damping and group velocity in polycrystalline silver and gold nanowires. By comparing to single-crystalline wires and by using different substrates, we quantitatively deduce the relative damping contributions due to metal crystallinity and absorption in the substrate. Compared to absorbing substrates, we find strongly reduced plasmonic damping for polycrystalline nanowires on quartz substrates, enabling the application of such wires for plasmonic waveguide networks.