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Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index
The electromagnetic properties of structures with spatially periodic distributed graded refractive index were investigated in the terahertz frequency range. The band structure and electromagnetic response of material with harmonically distributed refractive index were calculated and analyzed. The an...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7698603/ https://www.ncbi.nlm.nih.gov/pubmed/33218027 http://dx.doi.org/10.3390/ma13225208 |
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author | Bychanok, Dzmitry Gorokhov, Gleb Plyushch, Artyom Ronca, Alfredo Lavorgna, Marino Xia, Hesheng Lamberti, Patrizia Kuzhir, Polina |
author_facet | Bychanok, Dzmitry Gorokhov, Gleb Plyushch, Artyom Ronca, Alfredo Lavorgna, Marino Xia, Hesheng Lamberti, Patrizia Kuzhir, Polina |
author_sort | Bychanok, Dzmitry |
collection | PubMed |
description | The electromagnetic properties of structures with spatially periodic distributed graded refractive index were investigated in the terahertz frequency range. The band structure and electromagnetic response of material with harmonically distributed refractive index were calculated and analyzed. The analytical expressions for frequencies of the first and second bandgap are derived. 3D printed gyroid based architectures were proven to be harmonically graded refractive index structures with designed bandgaps in THz frequency ranges. The transmission coefficient of thermoplastic polyurethane-based samples were experimentally measured in the frequency range 100–500 GHz and compared with theoretical results. Due to losses in the real world produced samples, the predicted response is significantly dumped in the terahertz range and only traces of band gaps are experimentally observed. This funding paves the way toward a new generation of 3D printed THz components for gradient-index optics applications. |
format | Online Article Text |
id | pubmed-7698603 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-76986032020-11-29 Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index Bychanok, Dzmitry Gorokhov, Gleb Plyushch, Artyom Ronca, Alfredo Lavorgna, Marino Xia, Hesheng Lamberti, Patrizia Kuzhir, Polina Materials (Basel) Article The electromagnetic properties of structures with spatially periodic distributed graded refractive index were investigated in the terahertz frequency range. The band structure and electromagnetic response of material with harmonically distributed refractive index were calculated and analyzed. The analytical expressions for frequencies of the first and second bandgap are derived. 3D printed gyroid based architectures were proven to be harmonically graded refractive index structures with designed bandgaps in THz frequency ranges. The transmission coefficient of thermoplastic polyurethane-based samples were experimentally measured in the frequency range 100–500 GHz and compared with theoretical results. Due to losses in the real world produced samples, the predicted response is significantly dumped in the terahertz range and only traces of band gaps are experimentally observed. This funding paves the way toward a new generation of 3D printed THz components for gradient-index optics applications. MDPI 2020-11-18 /pmc/articles/PMC7698603/ /pubmed/33218027 http://dx.doi.org/10.3390/ma13225208 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Bychanok, Dzmitry Gorokhov, Gleb Plyushch, Artyom Ronca, Alfredo Lavorgna, Marino Xia, Hesheng Lamberti, Patrizia Kuzhir, Polina Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index |
title | Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index |
title_full | Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index |
title_fullStr | Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index |
title_full_unstemmed | Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index |
title_short | Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index |
title_sort | terahertz optics of materials with spatially harmonically distributed refractive index |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7698603/ https://www.ncbi.nlm.nih.gov/pubmed/33218027 http://dx.doi.org/10.3390/ma13225208 |
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