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Dispersion characteristics of terahertz transverse electric mode in a smooth-wall cylindrical waveguide with a degenerate plasma layer

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Abstract

The propagation of transverse electric mode in a cylindrical metallic smooth-wall waveguide contains a dielectric rod and a cold collisionless unmagnetized degenerate plasma layer is analytically investigated in the terahertz frequency region. The dispersion relations of fast and slow waves for this mode are derived and solved numerically. The effects of geometrical and physical parameters such as dielectric, plasma and metal radii, and dielectric permittivity on the dispersion characteristics of terahertz transverse electric mode and its frequency spectrum are studied. It is shown that the decrease of dielectric permittivity and metal radius, and the increase of degenerate plasma radius leads to higher frequency fast waves. It is also indicated that an increase in the dielectric radius results in a decrease in the frequency of fast waves. In addition, it is found that by reducing the dielectric rod radius and with increasing metal radius, the frequency is increased in the slow waves. Finally, it is shown that the increase in dielectric permittivity causes a decrease in the frequency of both fast and slow waves.

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Authors and Affiliations

  1. Institute of Advanced Photonics Science, Universiti Teknologi Malaysia (UTM), 81310, Johor Bahru, Malaysia

    F. Asadiamiri, K. Chaudhary & J. Ali

  2. Department of Physics, Faculty of Science, University of Qom, Ghadir Blvd, Qom, 371614611, Iran

    M. Nejati

  3. Department of Electronics and Computer Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), 81310, Johor Bahru, Malaysia

    M. Baboli

  4. Advanced Research Center for Photonics, King Mongkut’s Institute of Technology Ladkrabang (KMITL), Bangkok, 10520, Thailand

    P. P. Yupapin

  5. Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, 1983969411, Iran

    A. R. Niknam

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  1. F. Asadiamiri
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  2. M. Nejati
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  3. K. Chaudhary
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  7. A. R. Niknam
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Correspondence to M. Nejati.

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Asadiamiri, F., Nejati, M., Chaudhary, K. et al. Dispersion characteristics of terahertz transverse electric mode in a smooth-wall cylindrical waveguide with a degenerate plasma layer. Opt Quant Electron 52, 254 (2020). https://doi.org/10.1007/s11082-020-02364-y

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