Chin. Phys. B ›› 2014, Vol. 23 ›› Issue (1): 17801-017801.doi: 10.1088/1674-1056/23/1/017801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Numerical investigation of the enhanced unidirectional surface plasmon polaritons generator

张志东a, 王红艳a, 张中月b, 王辉a   

  1. a School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;
    b School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China
  • 收稿日期:2013-04-07 修回日期:2013-06-26 出版日期:2013-11-12 发布日期:2013-11-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174237 and 10974161), the National Basic Research Program of China (Grant No. 2013CB328904), the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant Nos. SWJTU12CX084 and SWJTU2010ZT06), and the Innovation Fund for Ph. D. Student of Southwest Jiaotong University, China.

Numerical investigation of the enhanced unidirectional surface plasmon polaritons generator

Zhang Zhi-Dong (张志东)a, Wang Hong-Yan (王红艳)a, Zhang Zhong-Yue (张中月)b, Wang Hui (王辉)a   

  1. a School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;
    b School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China
  • Received:2013-04-07 Revised:2013-06-26 Online:2013-11-12 Published:2013-11-12
  • Contact: Wang Hong-Yan E-mail:hongyanw@home.swjtu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174237 and 10974161), the National Basic Research Program of China (Grant No. 2013CB328904), the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant Nos. SWJTU12CX084 and SWJTU2010ZT06), and the Innovation Fund for Ph. D. Student of Southwest Jiaotong University, China.

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摘要： A unidirectional surface plasmon polaritons (SPPs) generator with greatly enhanced generation efficiency is proposed. The SPPs generator consists of an asymmetric single nanoslit coated with a polyviny alcohol (PVA) film and a silver rectangle block. The generation efficiency of this SPPs generator is investigated using the finite difference time domain method. Due to the presence of the silver rectangle block, the SPPs generation efficiency of the asymmetric single nanoslit with PVA film can be greatly enhanced and the corresponding wavelength with the maximum enhancement factor can be tuned flexibly. The influence of the structural parameters on the generation efficiency is also investigated for the enhanced unidirectional SPPs generator.

关键词: surface plasmon polariton, surface plasmon polaritons (SPPs) generator, asymmetric single-slit, finite difference time domain method

Abstract: A unidirectional surface plasmon polaritons (SPPs) generator with greatly enhanced generation efficiency is proposed. The SPPs generator consists of an asymmetric single nanoslit coated with a polyviny alcohol (PVA) film and a silver rectangle block. The generation efficiency of this SPPs generator is investigated using the finite difference time domain method. Due to the presence of the silver rectangle block, the SPPs generation efficiency of the asymmetric single nanoslit with PVA film can be greatly enhanced and the corresponding wavelength with the maximum enhancement factor can be tuned flexibly. The influence of the structural parameters on the generation efficiency is also investigated for the enhanced unidirectional SPPs generator.

Key words: surface plasmon polariton, surface plasmon polaritons (SPPs) generator, asymmetric single-slit, finite difference time domain method

中图分类号:  (Optical properties of surfaces)

  • 78.68.+m
73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))