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Optical and Quantum Electronics

Terahertz artificial dielectric cuboid lens on substrate for super-resolution images

  • 01-10-2017
Published in:
Authors
Igor V. Minin
Oleg V. Minin
Published in
Optical and Quantum Electronics | Issue 10/2017

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Abstract

This paper presents an investigation of terajets formation by dielectric periodic structure at terahertz frequencies (0.1–0.2 THz) in effective medium regime (photonic metamaterial). The dispersions of effective permittivity for periodic structures formed by plastics (ABS, black) were analytically obtained for both regimes. The study of the interaction of a plane wave and artificial cubic dielectric on a substrate parallelepiped to form a subwavelength terahertz beams (terajet) was performed. The results of numerical simulation of S-parameters of structure are discussed. The subwavelength beam waist of terajets about 0.39λ–0.41λ were obtained. The quality factor of terajets are discussed. The results may be applied for creation of methods to obtain subwavelength beams in the terahertz frequency range, and devices based on them. These investigations are opening new research lines such as mesoscale focusing devices for different sensing applications.

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previous article Square-shaped beam generated by phase shifted bounded square zone plate
next article Simultaneous measurement of refractive-index and temperature with high sensitivity by combined use of long-period grating and defect cavity in photonic crystal fibers
Title
Terahertz artificial dielectric cuboid lens on substrate for super-resolution images
Authors
Igor V. Minin
Oleg V. Minin
Publication date
01-10-2017
Publisher
Springer US
Published in
Optical and Quantum Electronics / Issue 10/2017
Print ISSN: 0306-8919
Electronic ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-017-1165-6
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