| 引用本文: | 孙琳,袁建民.亚波长割线对结构的太赫兹共振特性.[J].国防科技大学学报,2011,33(3):48-51.[点击复制] |
| SUN Lin,YUAN Jianmin.The Resonance of Subwavelength Cut-wire Pair Arrays in Terahertz Regime[J].Journal of National University of Defense Technology,2011,33(3):48-51[点击复制] |
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| 亚波长割线对结构的太赫兹共振特性 |
| 孙琳, 袁建民 |
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(国防科技大学 理学院，湖南 长沙 410073)
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| 摘要: |
| 利用有限元方法模拟了以亚波长周期排列的金属割线对(cut-wire pair)结构在太赫兹频域的透射谱。以单色平面波正入射该结构，透射谱出现很强的共振峰，其线宽随着金属几何线宽增加而增加，且在频域上出现红移。通过理论建模和数值仿真相结合分析，证明了这种随金属线宽增加而增强变宽的共振峰是法布里-珀罗(Fabry-Pérot)干涉和金属偶极子共振共同作用的结果。 |
| 关键词: 亚波长 割线对 法布里-珀罗干涉 |
| DOI： |
| 投稿日期：2011-03-07 |
| 基金项目:国家自然科学基金重点项目(10734140) |
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| The Resonance of Subwavelength Cut-wire Pair Arrays in Terahertz Regime |
| SUN Lin, YUAN Jianmin |
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(College of Science, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Transmission properties of periodic structured subwavelength cut-wire pairs in terahertz regime were investigated numerically using finite element method. Under the normal incidence, the resonant peak in transmission spectra was found with red shift by increasing width as the metal wire width increases. In comparison with the analytical model, it is shown that this phenomenon results from the coupling of Fabry-Pérot resonance and dipole resonan |
| Keywords: subwavelength cut-wire pair Fabry-Pérot interference |
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