The results of research of the electrophysical and frequency characteristics of the semiconductor structure of a Schottky diode based on gallium arsenide are presented. The diode structure was modelled in the Sentaurus TCAD software package. A comparison of the current-voltage characteristics obtained by mathematical modeling and by experiment are presented. The frequency response in the range of 115-257 GHz is shown. The use of a Schottky diode as a continuous terahertz radiation detector is shown.
The paper presents the results of studying electromagnetic response from polymer composite materials in the frequency range from 0.1 THz to 1.6 THz obtained using a BWO-based spectrometer and a time-domain spectrometer. The composites used were epoxy resin with the addition of barium titanate (BaTiO3) with a mass concentration of 40% to 80%. Based on these data, the values of the complex permittivity of composite samples are calculated and analyzed, and the electromagnetic response from the samples is modeled. An assessment of the applicability of this material in the elements of the THz range technology is carried out.
This paper considers the development and application of a system of reflectometry for the analysis of the homogeneity of structures manufactured by additive technologies. A system of reflectometry based on a backward wave oscillator, a two-dimensional object positioning system and an optoacoustic detector (Goley cell) is described. The results of reflectometry of the hexagonal periodic structure of cells based on acrylonitrile butadiene styrene at a wavelength of 343 microns are presented.
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