%0 Journal Article %A Gurin, O. V. %A Degtyarev, А. V. %A Maslov, V. A. %A Svich, V. A. %A Senyuta, V. S. %A Topkov, A. N. %A Khardikov, V. V. %D 2014 %I Begell House %K waveguide cavity, diffraction mirror, terahertz range, reflection coefficient, azimuthal polarization %N 14 %P 1229-1239 %R 10.1615/TelecomRadEng.v73.i14.20 %T THE FORMATION OF AZIMUTHALLY−POLARIZED TRANSVERSE MODES IN QUASI−OPTICAL WAVEGUIDE TERAHERTZ RESONATORS %U https://www.dl.begellhouse.com/journals/0632a9d54950b268,6cb424a7216f0491,78aab3c5178cef6a.html %V 73 %X 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. %8 2014-08-07