TUNABLE AND BROADBAND DIFFERENTIAL PHASE SECTIONS IN TERAHERTZ FREQUENCY RANGE

DOI: https://doi.org/10.15407/rpra21.04.318

O. S. Kosiak, V. I. Bezborodov, Ye. M. Kuleshov, P. K. Nesterov

Abstract


PACS numbers: 42.25.Lc, 42.25.Bs, 42.70.Mp

Purpose: Studying the quasioptical tunable and broadband differential phase section (DPS) consisting of several birefringent elements (BE) on the basis of form birefringence effect.

Design/methodology/approach: Using the polarization scattering matrix method, the impact of the mutual rotation axis of anisotropy of several BE by the amount of phase shift and the position of the plane of anisotropy of resulting DPS is considered.

Findings: The DPS tunable in a wide range are shown to be possibly implemented in the case of quarter-wave DPS of two, and in the case of half-wave DPS of three, identical non-tunable BE. The analysis has shown to the possibility of creating a broadband quarter-wave and half-wave DPS.

Сonclusions: Experimental research has confirmed the possibility of constructing a tunable and broadband DPS. On this basis, tunable and broadband polarization converters, rotators of polarization plane, polarization phase shifters and frequency shifters in the terahertz frequency range can be created.

Key words: terahertz range, quasioptics, differential phase section, form birefringence

Manuscript submitted 26.09.2016

Radio phys. radio astron. 2016, 21(4): 318-329

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Keywords


terahertz range; quasioptics; differential phase section; form birefringence

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