Propagation characteristics of oblique incidence terahertz wave through non-uniform plasma

doi:10.1088/1674-1056/28/1/014201

Abstract

The propagation characteristics of oblique incidence terahertz (THz) waves through non-uniform plasma are investigated by the shift-operator finite-difference time-domain (SO-FDTD) method combined with the phase matching condition. The electron density distribution of the non-uniform plasma is assumed to be in a Gaussian profile. Validation of the present method is performed by comparing the results with those obtained by an analytical method for a homogeneous plasma slab. Then the effects of parameters of THz wave and plasma layer on the propagation properties are analyzed. It is found that the transmission coefficients greatly depend on the incident angle as well as on the thickness of the plasma, while the polarization of the incident wave has little influence on the propagation process in the range of frequency considered in this paper. The results confirm that the THz wave can pass through the plasma sheath effectively under certain conditions, which makes it a potential candidate to overcome the ionization blackout problem.

Keywords: terahertz wave transmission oblique incidence plasma sheath finite-difference time-domain method

Received: 03 September 2018
Revised: 28 October 2018
Accepted manuscript online:

PACS:	42.25.Bs	(Wave propagation, transmission and absorption)
	03.50.De	(Classical electromagnetism, Maxwell equations)
	02.70.Bf	(Finite-difference methods)

Fund:

Project supported by the National Basic Research Program of China (Grant No. 2014CB340203), the National Natural Science Foundation of China (Grant Nos. 61431010 and 61501350), and the Natural Science Foundation of Shaanxi Province, China (Grant Nos. 2018JM6016 and 2016JM1001).

Corresponding Authors: Yiping Han, Jiajie Wang
E-mail: yphan@xidian.edu.cn;wangjiajie@xidian.edu.cn

Cite this article:

Antao Chen(陈安涛), Haoyu Sun(孙浩宇), Yiping Han(韩一平), Jiajie Wang(汪加洁), Zhiwei Cui(崔志伟) Propagation characteristics of oblique incidence terahertz wave through non-uniform plasma 2019 Chin. Phys. B 28 014201

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Propagation characteristics of oblique incidence terahertz wave through non-uniform plasma

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