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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Print: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v73.i14.20
pages 1229-1239

THE FORMATION OF AZIMUTHALLY−POLARIZED TRANSVERSE MODES IN QUASI−OPTICAL WAVEGUIDE TERAHERTZ RESONATORS

O. V. Gurin
V. Karazin National University of Kharkiv, 4, Svoboda Sq., Kharkiv, 61077
А. V. Degtyarev
V. Karazin National University of Kharkiv, 4, Svoboda Sq., Kharkiv, 61022, Ukraine
V. A. Maslov
V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine
V. A. Svich
V. Karazin National University of Kharkiv, 4, Svoboda Sq., Kharkiv, 61077
V. S. Senyuta
V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine
A. N. Topkov
V. Karazin Kharkiv National University 4, Svoboda Sq., 61077 Kharkiv, Ukraine
V. V. Khardikov
V. Karazin National University of Kharkov, Institute of Radio Astronomy, National Academy of Sciences of Ukraine, Kharkov, Ukraine

ABSTRACT

Cylindrical vector beams have many applications including electron acceleration, handling materials, a high-resolution metrology, microellipsometry and spectroscopy. In the terahertz range, the methods and approaches for obtaining beams with complex polarization structure are virtually nonexistent. We offer a computational method whereby the reflection and transmission coefficients of azimuthally-symmetric modes for a multi-annular mirror disposed within a metallic circular waveguide have been obtained. With use of HFSS software we have found an optimum mirror structure, which allows reducing significantly the reflection coefficients of non-azimuthally-polarized modes. The obtained results may be useful in the development of new intracavity methods intended for radiation formation with spatially inhomogeneous polarization in terahertz lasers.


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