Numerical analysis of terahertz surface plasmon polaritons propagating in a parallel plate configuration

27th IUPAP Conference on Computational Physics

物理学;计算机科学

Kaur, Sukhdeep^1 ; Kaur, Sarabjeet^1 ; Kaur, Manpreet^1 ; Kumar, Gagan^2

Department of Physics, Guru Nanak Dev University, Punjab- Amritsar

143005, India^1

Department of Physics, Indian Institute of Technology Guwahati, Assam

781039, India^2

关键词: Dispersion properties;    Parallel metal plates;    Parallel plates;    Specific frequencies;    Surface plasmon polaritons;    Terahertz frequencies;    Terahertz surfaces;    Zenneck waves;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/759/1/012049/pdf
DOI  :  10.1088/1742-6596/759/1/012049

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In this paper, we present numerical analysis of terahertz (THz) surface plasmon polaritons propagating in a parallel plate configuration. A planar metal surface has the ability to support loosely bound surface waves, called Zenneck waves at terahertz frequencies. Two parallel metal plates separated by a narrow vacuum region can lead to the highly confined terahertz surface plasmon modes at specific frequencies. The frequency of the terahertz mode can be changed with a change in the gap between the plates. Further, we observed that the carrier concentration of plates strongly effect the frequency of the terahertz mode as well as its properties. We have examined in detail the dispersion properties of the terahertz surface plasmons supported by the parallel plate configuration with a varying gap width as well as carrier density of the plates.