期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 11, 页码 10732-10738出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c01967
关键词
plasmon; FP cavity; tunable interference length; plasmon hybridization; nanoparticle antenna
资金
- National Natural Science Foundation of China [11704058]
- Fundamental Research Funds for the Central Universities [DUT19RC(3)007]
Fabry-Perot (FP) interference cavity for which the interference property is controlled by the tuning of the cavity length is widely used in many fields. However, in nanophotonic device applications, the physical length cannot be changed easily. In this work, the optical response of a simple antenna/spacer/reflector structure is investigated and it is found that the nanoparticle antenna metasurface acting as a FP reflection interface will tune the effective FP interference cavity length. Using both simulation and experiment, the hybridization of nanodisks, the reflection film, plasmon lattice, and the FP cavity is investigated. The results show that because of the hybridization, the effective FP cavity length is adjustable by the plasmon resonances. The plasmonic tunable nanocavity is highly beneficial for the design of a wide variety of nanophotonic devices in applications, such as broadband optical absorption, wavelength selective antireflective layers, and sensing devices, and is also promising for use in electronic ink panel displays.
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