期刊
NANO LETTERS
卷 12, 期 1, 页码 45-49出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl202864n
关键词
Plasmon propagation; plasmon group velocity; silver nanowires; plasmonic waveguides; ultrafast spectroscopy; spectral intetferometry
类别
资金
- DFG [SPP 1391]
- National Science Council of Taiwan [NSC 99-2113-M-007-020-MY2]
Spectral interferometry is employed to fully characterize amplitude and phase of propagating plasmons that are transmitted through silver nanowires in the form of ultrashort pulses. For nanowire diameters below 100 nm, the plasmon group velocity is found to decrease drastically in accordance with the theory of adiabatic focusing. Furthermore, the dependence of the plasmon group velocity on the local nanowire environment is demonstrated. Our findings are of relevance for the design and implementation of nanoplasmonic signal processing and in view of coherent control applications.
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