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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/22/5208 |
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| author | Dzmitry Bychanok Gleb Gorokhov Artyom Plyushch Alfredo Ronca Marino Lavorgna Hesheng Xia Patrizia Lamberti Polina Kuzhir |
| author_facet | Dzmitry Bychanok Gleb Gorokhov Artyom Plyushch Alfredo Ronca Marino Lavorgna Hesheng Xia Patrizia Lamberti Polina Kuzhir |
| author_sort | Dzmitry Bychanok |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T14:45:52Z |
| format | Article |
| id | doaj.art-750f441a293a47738caa4385c897d3a7 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T14:45:52Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-750f441a293a47738caa4385c897d3a72023-11-20T21:23:31ZengMDPI AGMaterials1996-19442020-11-011322520810.3390/ma13225208Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive IndexDzmitry Bychanok0Gleb Gorokhov1Artyom Plyushch2Alfredo Ronca3Marino Lavorgna4Hesheng Xia5Patrizia Lamberti6Polina Kuzhir7Research Institute for Nuclear Problems Belarusian State University, Bobruiskaya str. 11, 220030 Minsk, BelarusResearch Institute for Nuclear Problems Belarusian State University, Bobruiskaya str. 11, 220030 Minsk, BelarusResearch Institute for Nuclear Problems Belarusian State University, Bobruiskaya str. 11, 220030 Minsk, BelarusInstitute of Polymer, Composite and Biomaterials, National Research Council, Via G.PreViati, 1/E, 23900 Lecco, ItalyInstitute of Polymer, Composite and Biomaterials, National Research Council, Via G.PreViati, 1/E, 23900 Lecco, ItalyInstitute of Polymer, Composite and Biomaterials, National Research Council, Via G.PreViati, 1/E, 23900 Lecco, ItalyDept. of Information and Electrical Engineering and Applied Mathematics, University of Salerno, Via Giovanni Paolo II, 132-84084 Fisciano (SA), ItalyResearch Institute for Nuclear Problems Belarusian State University, Bobruiskaya str. 11, 220030 Minsk, BelarusThe 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.https://www.mdpi.com/1996-1944/13/22/5208terahertz bandgapgraded index materialsharmonically distributed refractive index |
| spellingShingle | Dzmitry Bychanok Gleb Gorokhov Artyom Plyushch Alfredo Ronca Marino Lavorgna Hesheng Xia Patrizia Lamberti Polina Kuzhir Terahertz Optics of Materials with Spatially Harmonically Distributed Refractive Index Materials terahertz bandgap graded index materials 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 | terahertz bandgap graded index materials harmonically distributed refractive index |
| url | https://www.mdpi.com/1996-1944/13/22/5208 |
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