中国物理B ›› 2011, Vol. 20 ›› Issue (1): 15101-015101.doi: 10.1088/1674-1056/20/1/015101

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Numerical studies of surface and bulk modes in attenuated total reflection spectra

燕保荣, 吕建红, 孔令华, 胡希伟   

  1. College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2010-03-03 修回日期:2010-09-07 出版日期:2011-01-15 发布日期:2011-01-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10775055).

Numerical studies of surface and bulk modes in attenuated total reflection spectra

Yan Bao-Rong(燕保荣),Lü Jian-Hong(吕建红), Kong Ling-Hua(孔令华),and Hu Xi-Wei(胡希伟)   

  1. College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2010-03-03 Revised:2010-09-07 Online:2011-01-15 Published:2011-01-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10775055).

摘要: The dispersion relations of normal modes in the layered constructions are studied. In the frequency region with negative permittivity, we investigate the normal modes near the air--metal and the air--matematerial interfaces and compare them. An extra bulk mode appearing in a pass band of two media is found near the air--matematerial interface, which is different from the air--metal case. Moreover, the bulk mode will be further proved by the attenuated total reflection (ATR) technique, in which the coupling between the incident electromagnetic waves and the normal modes is studied. For p-polarized incident waves, the ATR spectra based on the Otto and the Kretschmann configurations are obtained numerically, where the dips present the excitations of the surface and bulk modes. Furthermore, we also discuss the influences of the middle layer thickness, the incident angle and the damping term on the reflection in detail. It is found that the coupling frequencies and the maximum strength are strongly dependent on the above media parameters.

Abstract: The dispersion relations of normal modes in the layered constructions are studied. In the frequency region with negative permittivity, we investigate the normal modes near the air–metal and the air–matematerial interfaces and compare them. An extra bulk mode appearing in a pass band of two media is found near the air–matematerial interface, which is different from the air--metal case. Moreover, the bulk mode will be further proved by the attenuated total reflection (ATR) technique, in which the coupling between the incident electromagnetic waves and the normal modes is studied. For p-polarized incident waves, the ATR spectra based on the Otto and the Kretschmann configurations are obtained numerically, where the dips present the excitations of the surface and bulk modes. Furthermore, we also discuss the influences of the middle layer thickness, the incident angle and the damping term on the reflection in detail. It is found that the coupling frequencies and the maximum strength are strongly dependent on the above media parameters.

Key words: surface polaritons, attenuated total reflection, metamaterial

中图分类号:  (Optical and dielectric properties)

  • 51.70.+f
81.05.-t (Specific materials: fabrication, treatment, testing, and analysis)