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Dielectric Properties of Liquid Crystals of N•CB Series in the Thz Range

Keywords:

V.V. Meriakri, I.P. Nikitin, Ci-Ling Pan, Ru-Pin Pan, M.P. Parkhomenko, E.E. Chigryay


TDielectric properties of n•CB (n = 5, 6, 7, 8) liquid crystals are investigated at frequencies of 0,05 – 0,08, 0.12 – 0,16, and 0,6 THz. The measurements are carried out both by earlier described methods and by a reflectometer designed on the basis of a Mach-Zehnder interferometer and quasioptical metal-dielectric waveguides. Of most interest are the room-temperature measurements of the birefringence of liquid crystals. These measurements show that the liquid crystals under test can be used as polarization transformers in the short-wavelength region of the millimeter-wave band and the long-wavelength region of the submillimeter-wave band
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