Characterization of ultrafast plasmon dynamics in individual gold bowtie by time-resolved photoemission electron microscopy
Characterization of ultrafast plasmon dynamics in individual gold bowtie by time-resolved photoemission electron microscopy
复制标题
通过时间分辨光电子显微镜表征单个金领结中的超快等离子体动力学
DOI:
10.1007/s00340-018-7112-9
复制
发表时间:
2018-12
期刊:
影响因子:
--
通讯作者:
林景全
中科院分区:
文献类型:
--
作者:
秦榆禄;季博宇;宋晓伟;林景全
We report on the investigation of ultrafast dynamics of the plasmonic field in individual gold bowtie nanostructure by combining interferometric time-resolved photoemission electron microscopy with a damped harmonic oscillator model. We experimentally obtain different plasmon dephasing times in the tips of the bowtie nanostructure. In the meantime, we demonstrate that the experimental time-resolved photoemission signal can be used to directly compare resonance frequency and dephasing time of different hot spots. In addition, we find that the plasmon field, which is extracted from the photoemission signal, initially oscillates at the laser field frequency, and finally develops into its eigenfrequency after experiencing a few periods of frequency fluctuation due to the competition between forced and autonomous oscillation of the plasmons.
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影响因子:
8.6
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通讯作者:
Kreiter, M
影响因子:
16.6
作者:
通讯作者:
--
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通讯作者:
Tr채ger, F
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影响因子:
2.1
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通讯作者:
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