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| 超分辨率纳米聚焦系统设计 |
| The simulation study of optical antenna in the super-resolution focusing system |
| 投稿时间:2018-03-16 |
| DOI:10.3969/j.issn.1005-5630.2018.06.010 |
| 中文关键词: 超分辨率聚焦 纵向偏振光 光学天线 |
| 英文关键词:super-resolution focusing longitudinally polarized light optical antenna |
| 基金项目:国家基础研究973课题(2015CB352001);上海科委能力建设项目(15140502600) |
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| 中文摘要: |
| 纳米尺寸的聚焦光斑在光存储、光学成像等领域有着重要的作用,为此设计了一种近场聚焦系统来获得超分辨率纳米聚焦光斑。系统中使用纵向偏振光做光源,用于激发光学天线产生表面等离子体增益,形成纳米光斑。分析了不同材料和尺寸的光学天线对超分辨率聚焦的影响,进而设计由合适的材料和结构构成的光学天线,实现10 nm直径的聚焦光斑。 |
| 英文摘要: |
| Nano-sized focusing light spot is highly expected in the optical storage,optical imaging etc.We have designed a near-field focusing system to obtain a super-resolution nano-sized light spot.In this system,longitudinally polarized light is used to excite a sphere optical antenna which generates enhanced localized surface plasmon light spot with nanometer width.We analyzed the effect of different material and size of the sphere on the super-resolution light spot and designed an optimal antenna to generate a focusing spot of 10 nm diameter. |
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