УДК: 535.3

Development of narrow bandpass filters based on cross cavities for the terahertz frequency range

Soboleva, V.Y., Gomon, D.A., Sedykh, E.A., Balya, V.K., Khodzitskiy, M.K.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Соболева В.Ю., Гомон Д.А., Седых Е.А., Баля В.К., Ходзицкий М.К. Разработка узкополосных фильтров на основе крестообразных резонаторов для терагерцового диапазона частот // Оптический журнал. 2017. Т. 84. № 8. С. 23–26.

Soboleva V.Yu., Gomon D.A., Sedykh E.A., Balya V.K., Khodzitskiy M.K. Development of narrow bandpass filters based on cross cavities for the terahertz frequency range [in Russian] // Opticheskii Zhurnal. 2017. V. 84. № 8. P. 23–26.

For citation (Journal of Optical Technology):

V. Yu. Soboleva, D. A. Gomon, E. A. Sedykh, V. K. Balya, and M. K. Khodzitskiĭ, "Development of narrow bandpass filters based on cross cavities for the terahertz frequency range," Journal of Optical Technology. 84(8), 521-524 (2017). https://doi.org/10.1364/JOT.84.000521

Abstract:

A narrow bandpass terahertz filter based on cross cavities was developed for four frequencies. The geometric parameters of the cavities for each resonant frequency were calculated, and the filter transmission spectra for the calculated parameters were obtained numerically, analytically, and experimentally. The simulation was carried out in the COMSOL Multiphysics modeling environment using the finite element method. A model of the oscillator circuit was used for the analytical construction of spectra. An experimental sample was fabricated and an experiment was performed using pulse terahertz spectroscopy. The possibility of controlling the spectral characteristics of the filter using two methods—mechanically and by changing the angle of incidence of radiation on the plane of the filter—was studied.

Keywords:

frequency-selective surface, metamaterials, terahertz radiation, bandpass filter, cross cavities, terahertz spectroscopy

OCIS codes: 230.0230, 120.2440

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