Undirectional launcher of surface plasmon polaritons based on subwavelength slits with side-illumination and backside-illumination
| Autor: | Shinian Qu, Jicheng Wang, Cheng Liu, Baojie Tang, Xiushan Xia, Zhe Da Hu, Xiuye Liang, Ci Song |
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| Rok vydání: | 2016 |
| Předmět: |
Electromagnetic field
Physics business.industry Surface plasmon Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Surface plasmon polariton Atomic and Molecular Physics and Optics Finite element method Electronic Optical and Magnetic Materials 010309 optics Optics Interference (communication) 0103 physical sciences Back-illuminated sensor Electrical and Electronic Engineering 0210 nano-technology business Localized surface plasmon |
| Zdroj: | Optik. 127:1139-1143 |
| ISSN: | 0030-4026 |
| Popis: | We propose a metal-insulator-metal (MIM) model of undirectional launcher of surface plasmon polaritons (SPPs) based on subwavelength slits with side-illumination and backside-illumination in theory. The electromagnetic field intensities along one direction can be enhanced or suppressed by surface plasmon interference. The periodical change of the splitting ratio is analyzed. The high-efficiency undirectional propagation of SPPs is achieved by utilizing the adjusted double two slits structure with side-illumination. The best splitting ratio is about 30. The finite element method (FEM) illustrates our theoretical design. |
| Databáze: | OpenAIRE |
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