Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Spectral Analysis of the Metamaterial Formed by Optimally Shaped Omega Elements on a Silicon Substrate at Oblique Incidence of S- and P-polarized Terahertz Radiation

Version 1 : Received: 22 December 2023 / Approved: 22 December 2023 / Online: 22 December 2023 (07:24:43 CET)
Version 2 : Received: 22 December 2023 / Approved: 25 December 2023 / Online: 25 December 2023 (04:46:25 CET)

A peer-reviewed article of this Preprint also exists.

Lyakhnovich, A.V.; Semchenko, I.V.; Samofalov, A.L.; Podalov, M.A.; Sinitsyn, G.V.; Kravchenko, A.Y.; Khakhomov, S.A. Terahertz Polarization-Resolved Spectra of the Metamaterial Formed by Optimally Shaped Omega Elements on a Silicon Substrate at Oblique Incidence of Waves. Photonics 2024, 11, 163. Lyakhnovich, A.V.; Semchenko, I.V.; Samofalov, A.L.; Podalov, M.A.; Sinitsyn, G.V.; Kravchenko, A.Y.; Khakhomov, S.A. Terahertz Polarization-Resolved Spectra of the Metamaterial Formed by Optimally Shaped Omega Elements on a Silicon Substrate at Oblique Incidence of Waves. Photonics 2024, 11, 163.

Abstract

The reflection and transmission spectra of a metamaterial formed by omega-shaped elements with pre-calculated optimal parameters on a silicon substrate have been recorded in the terahertz range at oblique incidence for the s- and p- polarizations of the incident wave. The spectra were interpreted within the dipole radiation theory of electromagnetic waves. Both measurement results and analysis provide evidence sup-porting the presence of a pronounced polarization anisotropy impact in the reflection and transmission of the metamaterial. The potential of these materials to be utilized in the development of devices that control the polarization properties of THz radiation across a wide spectral range is examined.

Keywords

terahertz time-domain spectroscopy; omega-shaped element; metamaterial; polarization spectrum; polarization anisotropy; wide-spectrum polarization filtration

Subject

Physical Sciences, Optics and Photonics

Comments (1)

Comment 1
Received: 25 December 2023
Commenter: Sergei Khakhomov
Commenter's Conflict of Interests: Author
Comment: Changed misprints on pages 5 and 7:
p.5 
Figure 5 illustrates families of characteristic reflection spectra.   Figure 5 illustrates families of characteristic reflection spectra.  
p.7
l is the omega-shaped element arm length; 
the resulting reflected radiation is likewise linearly polarized and comprises only an s-component. 
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