期刊
NANO LETTERS
卷 17, 期 2, 页码 1181-1186出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b04893
关键词
Nanoplasmonics; field enhancement; ultrafast interactions; photoelectrons; femtosecond laser pulses
类别
资金
- Hungarian Academy of Sciences
- National Research, Development and Innovation Office of Hungary [109257, 109472]
- European Cooperation in Science and Technology through COST Action [MP1302]
- ELI-ALPS project
- European Union [GOP-1.1.1-12/B-2012-000, GINOP-2.3.6-15-2015-00001]
- European Regional Development Fund
- Max Planck Society
Probing nanooptical near-fields is a major challenge in plasmonics. Here, we demonstrate an experimental method utilizing ultrafast photoemission from plasmonic nanostructures that is capable of probing the maximum nanoplasmonic field enhancement in any metallic surface environment. Directly measured field enhancement values for various samples are in good agreement with detailed finite-difference time-domain simulations. These results establish ultrafast plasmonic photoelectrons as versatile probes for nanoplasmonic near-fields.
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