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| Characteristics of Oblique Incident Terahertz Wave Propagation in Uniform Unmagnetized Plasma |
| Received:June 03, 2018 Revised:January 25, 2019 |
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| DOI：10.7643/ issn.1672-9242.2019.01.023：A |
| KeyWord:terahertz electromagnetic wave unmagnetized plasma incident angle reflection and transmission |
| Author | Institution |
| DONG Qun-feng |
1. School of Physics and Electronic Engineering, Xianyang Normal University, Xianyang , China;2. School of Science, Xi'an Technological University, Xi'an , China |
| XIANG Ning-jing |
1. School of Physics and Electronic Engineering, Xianyang Normal University, Xianyang , China |
| LI Jun-jie |
2. School of Science, Xi'an Technological University, Xi'an , China |
| ZHANG Hui |
1. School of Physics and Electronic Engineering, Xianyang Normal University, Xianyang , China |
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| Abstract: |
| Objective To research transfer characteristics of terahertz (THz) electromagnetic wave propagation in the un-magnetized plasma. Methods According to the theory of electromagnetic wave propagation in layered medium, the TE reflection and transmission coefficients were given. The effects of the incident angle and frequency of terahertz wave as well as collision frequency and electron density of plasma on the reflection and transmission were discussed. Results It was found that there were in good agreement with values of TE reflection and transmission obtained by the existing formulas and proposed models on normal incidence. With the increase of incident angle, the reflection coefficient increased and the transmission coefficient decreased during oblique incidence. With the increase of wave frequency, the reflection coefficient decreased and the transmission coefficient initially increased quickly, and then flattened. With the increase of the electron density, the transmission coefficient decreased, the absorption increased and the THz wave attenuation increased. Conclusion The incident angle increases, the reflectance coefficient becomes bigger. When the terahertz wave frequency is low, the incident angle has obvious influence on the transmission. |
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