›› 2014, Vol. 27 ›› Issue (1): 74-.

• 论文 • 上一篇    下一篇

等臂L形银纳米天线的表面等离子特性研究

郝爱文,程龙,李新,李延军,曹圣磊,曾庆平   

  1. (1.中国人民解放军63889部队,河南 孟州 454750;2.西安交通大学 理学院,陕西 西安 710049)
  • 出版日期:2014-01-15 发布日期:2014-01-12
  • 作者简介:郝爱文(1987—),男,硕士,助理工程师。研究方向:光电及光电对抗。E-mail:563131960@qq.com

Plasma Surface Characteristics Investigation of the L-shaped Silver Nano-antenna with Equal Arms

 HAO Ai-Wen, CHENG Long, LI Xin, LI Yan-Jun, CAO Sheng-Lei, ZENG Qing-Ping   

  1. (1.Unit 63889 of the Chinese People's Liberation Army,Mengzhou 454750,China;
    2.School of Science,Xi'an Jiaotong University,Xi'an 710049,China)
  • Online:2014-01-15 Published:2014-01-12

摘要:

利用FDTD方法分析了由银纳米线形成的等臂L形光学共振天线的共振模式。研究了其场增强特性及共振散射谱的变化。L形纳米天线的近场增强特性强烈依赖于入射偏振,入射光偏振方向沿垂直于镜面对称轴方向时有最大一阶共振近场增强;入射光偏振方向沿镜面对称轴方向时有最大的二阶共振近场增强。

关键词: 纳米天线, 表面等离子激元, 共振散射, 电场增强

Abstract:

The L-shape antenna resonance mode formed by silver nanowires is analyzes by FDTD method,and the field enhancement and resonance scattering spectral changes are studied.The local surface plasmon mode of L-shaped nano-antenna depends heavily on the incident optic polarization.Only odd or even order localized surface plasmon mode can be excited when the polarization of the incident light is perpendicular or parallel the symmetric axis of the L-shaped nano-antenna with equal arms because of symmetry matching.

Key words: nano-antenna;the surface plasmon resonance;resonance scattering;electric field enhancement

中图分类号: 

  • TN82