入射光偏振对金纳米棒状颗粒光学性质的影响

J4 ›› 2010, Vol. 27 ›› Issue (6): 732-736.

入射光偏振对金纳米棒状颗粒光学性质的影响

邓燕

安徽建筑工业学院数理系, 安徽合肥 230601

收稿日期:2009-09-17 修回日期:2009-10-26 出版日期:2010-11-28 发布日期:2010-11-19
通讯作者: 邓燕（1981—），女，博士，讲师。主要从事非线性光学、近场光学的研究。 E-mail:dyz2000@mail.ustc.edu.cn
基金资助:
高等学校省级优秀青年人才基金项目（2010SQRL095）、安徽建筑工业学院硕博启动基金（K0242701）资助

Influence of polarization of light on optical properties of single gold nanorod

DENG Yan

Department of Mathematics and Physics, Anhui University of Architecture, Hefei 23000,China

Received:2009-09-17 Revised:2009-10-26 Published:2010-11-28 Online:2010-11-19

摘要/Abstract

摘要：

利用离散偶极近似（Discrete dipole approximation, DDA）方法分析了入射光偏振状态对单个金纳米棒状颗粒的光学性质的影响，并给出了单个金纳米棒状颗粒底面和剖面的近场分布图，对于设计实现基于金属微纳结构的纳米光子器件具有一定的指导意义。研究结果表明，不同的入射光偏振方向会激发不同的表面等离子体模式（横向表面等离子体共振和纵向表面等离子体共振），这将影响棒状颗粒的消失谱峰和近场分布。

关键词: 近场光学, 消失谱峰, 近场分布, 离散偶极近似, 金属纳米棒

Abstract:

The discrete dipole approximation (DDA) was used to investigate the effect of polarization on optical properties of single gold nanorod and the near-field distribution around the nanorod by DDA method was obtained, which has some instructive significance for designing the nano-optical devices on the basis of metal nano and micro structure. The results show that different light polarization would induce different surface plasmon mode (the transverse surface plasmon resonance and the longitudinal surface plasmon resonance), which would influence extinction spectra and the near-field distribution of gold nanorod.

Key words: near-field optics, extinction spectra, near-field distribution, discrete dipole approximation, metal nanorod

中图分类号:

邓燕. 入射光偏振对金纳米棒状颗粒光学性质的影响[J]. J4, 2010, 27(6): 732-736.

DENG Yan. Influence of polarization of light on optical properties of single gold nanorod[J]. J4, 2010, 27(6): 732-736.

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