Plasmonic Mode Coupling in Metallic Nanostructures
碩士 === 國立成功大學 === 光電科學與工程學系 === 101 === In this thesis, we demonstrate two different mechanisms of mode couplings phenomena in metallic nanostructures using Finite-Difference Time-Domain (FDTD) method. One is the hybridization between two elementary modes in the Metal-Isolator-Metal (MIM) nanostruct...
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| Format: | Others |
| Language: | en_US |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/55499830187075373690 |
| Summary: | 碩士 === 國立成功大學 === 光電科學與工程學系 === 101 === In this thesis, we demonstrate two different mechanisms of mode couplings phenomena in metallic nanostructures using Finite-Difference Time-Domain (FDTD) method. One is the hybridization between two elementary modes in the Metal-Isolator-Metal (MIM) nanostructure due to the plasmonic coupling and phase retardation. Another one is Fano interference between the bright and dark modes on the symmetric breaking H shape nanostructure.
In the approach of plasmonic hybridization, we successfully shift the resonant wavelength by varying the geometry and dielectric constant. Based on the shifting of the resonant wavelength of scattering and absorption, we can apply this characteristic in the two photon laser application. In the H shape nanostructure, we verify the asymmetric resonance spectrum which can be recognized as Fano resonance and discuss its sensing application for detecting the dielectric environment.
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